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Finding the Fourth Proportional to 67,731.20, 101,308.80 and 60,761.60

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Solution

The fourth proportional to 67,731.20, 101,308.80 and 60,761.60 is: 90,884.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,731.20 : 101,308.80 = 60,761.60 : x
  2. Step 2: Convert to fraction form
    67,731.20/101,308.80 = 60,761.60/x
  3. Step 3: Cross multiply
    67,731.20x = 101,308.80 × 60,761.60
  4. Step 4: Simplify right side
    67,731.20x = 6,155,684,782.08
  5. Step 5: Solve for x
    x = 6,155,684,782.08/67,731.20
  6. Step 6: Final answer
    x = 90,884.04

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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.