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Finding the Fourth Proportional to 63,288.92, 87,347.76 and 39,423.08

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Solution

The fourth proportional to 63,288.92, 87,347.76 and 39,423.08 is: 54,409.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,288.92 : 87,347.76 = 39,423.08 : x
  2. Step 2: Convert to fraction form
    63,288.92/87,347.76 = 39,423.08/x
  3. Step 3: Cross multiply
    63,288.92x = 87,347.76 × 39,423.08
  4. Step 4: Simplify right side
    63,288.92x = 3,443,517,730.30
  5. Step 5: Solve for x
    x = 3,443,517,730.30/63,288.92
  6. Step 6: Final answer
    x = 54,409.49

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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.