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Finding the Fourth Proportional to 63,691.65, 95,537.61 and 19,318.77

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Solution

The fourth proportional to 63,691.65, 95,537.61 and 19,318.77 is: 28,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,691.65 : 95,537.61 = 19,318.77 : x
  2. Step 2: Convert to fraction form
    63,691.65/95,537.61 = 19,318.77/x
  3. Step 3: Cross multiply
    63,691.65x = 95,537.61 × 19,318.77
  4. Step 4: Simplify right side
    63,691.65x = 1,845,669,113.94
  5. Step 5: Solve for x
    x = 1,845,669,113.94/63,691.65
  6. Step 6: Final answer
    x = 28,978.20

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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.