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Finding the Fourth Proportional to 63,815.19, 95,728.05 and 19,442.31

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Solution

The fourth proportional to 63,815.19, 95,728.05 and 19,442.31 is: 29,165.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,815.19 : 95,728.05 = 19,442.31 : x
  2. Step 2: Convert to fraction form
    63,815.19/95,728.05 = 19,442.31/x
  3. Step 3: Cross multiply
    63,815.19x = 95,728.05 × 19,442.31
  4. Step 4: Simplify right side
    63,815.19x = 1,861,174,423.80
  5. Step 5: Solve for x
    x = 1,861,174,423.80/63,815.19
  6. Step 6: Final answer
    x = 29,165.07

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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.