Home / 87,139.68-130,721.76-34,554.48

Finding the Fourth Proportional to 87,139.68, 130,721.76 and 34,554.48

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Solution

The fourth proportional to 87,139.68, 130,721.76 and 34,554.48 is: 51,836.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,139.68 : 130,721.76 = 34,554.48 : x
  2. Step 2: Convert to fraction form
    87,139.68/130,721.76 = 34,554.48/x
  3. Step 3: Cross multiply
    87,139.68x = 130,721.76 × 34,554.48
  4. Step 4: Simplify right side
    87,139.68x = 4,517,022,441.48
  5. Step 5: Solve for x
    x = 4,517,022,441.48/87,139.68
  6. Step 6: Final answer
    x = 51,836.57

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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.