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Finding the Fourth Proportional to 60,538.20, 90,710.10 and 39,737.40

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Solution

The fourth proportional to 60,538.20, 90,710.10 and 39,737.40 is: 59,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,538.20 : 90,710.10 = 39,737.40 : x
  2. Step 2: Convert to fraction form
    60,538.20/90,710.10 = 39,737.40/x
  3. Step 3: Cross multiply
    60,538.20x = 90,710.10 × 39,737.40
  4. Step 4: Simplify right side
    60,538.20x = 3,604,583,527.74
  5. Step 5: Solve for x
    x = 3,604,583,527.74/60,538.20
  6. Step 6: Final answer
    x = 59,542.30

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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.