Home / 87,815.52-121,188.35-53,817.44

Finding the Fourth Proportional to 87,815.52, 121,188.35 and 53,817.44

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Solution

The fourth proportional to 87,815.52, 121,188.35 and 53,817.44 is: 74,269.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,815.52 : 121,188.35 = 53,817.44 : x
  2. Step 2: Convert to fraction form
    87,815.52/121,188.35 = 53,817.44/x
  3. Step 3: Cross multiply
    87,815.52x = 121,188.35 × 53,817.44
  4. Step 4: Simplify right side
    87,815.52x = 6,522,046,624.27
  5. Step 5: Solve for x
    x = 6,522,046,624.27/87,815.52
  6. Step 6: Final answer
    x = 74,269.86

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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.