Home / 87,666.43-131,499.64-72,885.95

Finding the Fourth Proportional to 87,666.43, 131,499.64 and 72,885.95

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Solution

The fourth proportional to 87,666.43, 131,499.64 and 72,885.95 is: 109,328.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,666.43 : 131,499.64 = 72,885.95 : x
  2. Step 2: Convert to fraction form
    87,666.43/131,499.64 = 72,885.95/x
  3. Step 3: Cross multiply
    87,666.43x = 131,499.64 × 72,885.95
  4. Step 4: Simplify right side
    87,666.43x = 9,584,476,186.06
  5. Step 5: Solve for x
    x = 9,584,476,186.06/87,666.43
  6. Step 6: Final answer
    x = 109,328.92

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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.