Home / 87,861.20-121,248.52-47,575.28

Finding the Fourth Proportional to 87,861.20, 121,248.52 and 47,575.28

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Solution

The fourth proportional to 87,861.20, 121,248.52 and 47,575.28 is: 65,653.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,861.20 : 121,248.52 = 47,575.28 : x
  2. Step 2: Convert to fraction form
    87,861.20/121,248.52 = 47,575.28/x
  3. Step 3: Cross multiply
    87,861.20x = 121,248.52 × 47,575.28
  4. Step 4: Simplify right side
    87,861.20x = 5,768,432,288.59
  5. Step 5: Solve for x
    x = 5,768,432,288.59/87,861.20
  6. Step 6: Final answer
    x = 65,653.92

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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.