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Finding the Fourth Proportional to 71,648,015.60, 107,472,023.40 and 17,795,327.60

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Solution

The fourth proportional to 71,648,015.60, 107,472,023.40 and 17,795,327.60 is: 26,692,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,648,015.60 : 107,472,023.40 = 17,795,327.60 : x
  2. Step 2: Convert to fraction form
    71,648,015.60/107,472,023.40 = 17,795,327.60/x
  3. Step 3: Cross multiply
    71,648,015.60x = 107,472,023.40 × 17,795,327.60
  4. Step 4: Simplify right side
    71,648,015.60x = 1,912,499,864,237,866
  5. Step 5: Solve for x
    x = 1,912,499,864,237,866/71,648,015.60
  6. Step 6: Final answer
    x = 26,692,991.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.