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Finding the Fourth Proportional to 66,702.48, 100,102.92 and 53,711.70

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Solution

The fourth proportional to 66,702.48, 100,102.92 and 53,711.70 is: 80,607.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,702.48 : 100,102.92 = 53,711.70 : x
  2. Step 2: Convert to fraction form
    66,702.48/100,102.92 = 53,711.70/x
  3. Step 3: Cross multiply
    66,702.48x = 100,102.92 × 53,711.70
  4. Step 4: Simplify right side
    66,702.48x = 5,376,698,008.16
  5. Step 5: Solve for x
    x = 5,376,698,008.16/66,702.48
  6. Step 6: Final answer
    x = 80,607.17

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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.