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Finding the Fourth Proportional to 71,700.61, 107,565.28 and 40,155.54

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Solution

The fourth proportional to 71,700.61, 107,565.28 and 40,155.54 is: 60,241.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,700.61 : 107,565.28 = 40,155.54 : x
  2. Step 2: Convert to fraction form
    71,700.61/107,565.28 = 40,155.54/x
  3. Step 3: Cross multiply
    71,700.61x = 107,565.28 × 40,155.54
  4. Step 4: Simplify right side
    71,700.61x = 4,319,341,803.26
  5. Step 5: Solve for x
    x = 4,319,341,803.26/71,700.61
  6. Step 6: Final answer
    x = 60,241.36

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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.