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Finding the Fourth Proportional to 63,702.30, 87,921.36 and 42,192.30

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Solution

The fourth proportional to 63,702.30, 87,921.36 and 42,192.30 is: 58,233.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,702.30 : 87,921.36 = 42,192.30 : x
  2. Step 2: Convert to fraction form
    63,702.30/87,921.36 = 42,192.30/x
  3. Step 3: Cross multiply
    63,702.30x = 87,921.36 × 42,192.30
  4. Step 4: Simplify right side
    63,702.30x = 3,709,604,397.53
  5. Step 5: Solve for x
    x = 3,709,604,397.53/63,702.30
  6. Step 6: Final answer
    x = 58,233.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.