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Finding the Fourth Proportional to 78,573.60, 117,860.40 and 73,965.60

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Solution

The fourth proportional to 78,573.60, 117,860.40 and 73,965.60 is: 110,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,573.60 : 117,860.40 = 73,965.60 : x
  2. Step 2: Convert to fraction form
    78,573.60/117,860.40 = 73,965.60/x
  3. Step 3: Cross multiply
    78,573.60x = 117,860.40 × 73,965.60
  4. Step 4: Simplify right side
    78,573.60x = 8,717,615,202.24
  5. Step 5: Solve for x
    x = 8,717,615,202.24/78,573.60
  6. Step 6: Final answer
    x = 110,948.40

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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.