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Finding the Fourth Proportional to 57,800.62, 86,702.70 and 15,680.53

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Solution

The fourth proportional to 57,800.62, 86,702.70 and 15,680.53 is: 23,521.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,800.62 : 86,702.70 = 15,680.53 : x
  2. Step 2: Convert to fraction form
    57,800.62/86,702.70 = 15,680.53/x
  3. Step 3: Cross multiply
    57,800.62x = 86,702.70 × 15,680.53
  4. Step 4: Simplify right side
    57,800.62x = 1,359,544,455.61
  5. Step 5: Solve for x
    x = 1,359,544,455.61/57,800.62
  6. Step 6: Final answer
    x = 23,521.28

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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.