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Finding the Fourth Proportional to 65,443.52, 98,159.61 and 40,487.42

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Solution

The fourth proportional to 65,443.52, 98,159.61 and 40,487.42 is: 60,727.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,443.52 : 98,159.61 = 40,487.42 : x
  2. Step 2: Convert to fraction form
    65,443.52/98,159.61 = 40,487.42/x
  3. Step 3: Cross multiply
    65,443.52x = 98,159.61 × 40,487.42
  4. Step 4: Simplify right side
    65,443.52x = 3,974,229,357.11
  5. Step 5: Solve for x
    x = 3,974,229,357.11/65,443.52
  6. Step 6: Final answer
    x = 60,727.62

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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.