Home / 87,665.18-131,497.76-72,884.70

Finding the Fourth Proportional to 87,665.18, 131,497.76 and 72,884.70

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Solution

The fourth proportional to 87,665.18, 131,497.76 and 72,884.70 is: 109,327.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,665.18 : 131,497.76 = 72,884.70 : x
  2. Step 2: Convert to fraction form
    87,665.18/131,497.76 = 72,884.70/x
  3. Step 3: Cross multiply
    87,665.18x = 131,497.76 × 72,884.70
  4. Step 4: Simplify right side
    87,665.18x = 9,584,174,970.48
  5. Step 5: Solve for x
    x = 9,584,174,970.48/87,665.18
  6. Step 6: Final answer
    x = 109,327.05

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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.