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Finding the Fourth Proportional to 63,715.50, 87,797.72 and 49,287.69

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Solution

The fourth proportional to 63,715.50, 87,797.72 and 49,287.69 is: 67,916.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,715.50 : 87,797.72 = 49,287.69 : x
  2. Step 2: Convert to fraction form
    63,715.50/87,797.72 = 49,287.69/x
  3. Step 3: Cross multiply
    63,715.50x = 87,797.72 × 49,287.69
  4. Step 4: Simplify right side
    63,715.50x = 4,327,346,929.29
  5. Step 5: Solve for x
    x = 4,327,346,929.29/63,715.50
  6. Step 6: Final answer
    x = 67,916.71

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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.