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Finding the Fourth Proportional to 71,772,565.60, 107,658,848.40 and 43,107,119.20

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Solution

The fourth proportional to 71,772,565.60, 107,658,848.40 and 43,107,119.20 is: 64,660,678.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,772,565.60 : 107,658,848.40 = 43,107,119.20 : x
  2. Step 2: Convert to fraction form
    71,772,565.60/107,658,848.40 = 43,107,119.20/x
  3. Step 3: Cross multiply
    71,772,565.60x = 107,658,848.40 × 43,107,119.20
  4. Step 4: Simplify right side
    71,772,565.60x = 4,640,862,810,913,530
  5. Step 5: Solve for x
    x = 4,640,862,810,913,530/71,772,565.60
  6. Step 6: Final answer
    x = 64,660,678.80

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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.