Home / 87,299.77-130,691.31-53,912.50

Finding the Fourth Proportional to 87,299.77, 130,691.31 and 53,912.50

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Solution

The fourth proportional to 87,299.77, 130,691.31 and 53,912.50 is: 80,709.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,299.77 : 130,691.31 = 53,912.50 : x
  2. Step 2: Convert to fraction form
    87,299.77/130,691.31 = 53,912.50/x
  3. Step 3: Cross multiply
    87,299.77x = 130,691.31 × 53,912.50
  4. Step 4: Simplify right side
    87,299.77x = 7,045,895,250.38
  5. Step 5: Solve for x
    x = 7,045,895,250.38/87,299.77
  6. Step 6: Final answer
    x = 80,709.21

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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.