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Finding the Fourth Proportional to 66,531.95, 99,817.05 and 38,472.11

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Solution

The fourth proportional to 66,531.95, 99,817.05 and 38,472.11 is: 57,719.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,531.95 : 99,817.05 = 38,472.11 : x
  2. Step 2: Convert to fraction form
    66,531.95/99,817.05 = 38,472.11/x
  3. Step 3: Cross multiply
    66,531.95x = 99,817.05 × 38,472.11
  4. Step 4: Simplify right side
    66,531.95x = 3,840,172,527.48
  5. Step 5: Solve for x
    x = 3,840,172,527.48/66,531.95
  6. Step 6: Final answer
    x = 57,719.22

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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.