Home / 87,434.40-130,849.20-52,399.20

Finding the Fourth Proportional to 87,434.40, 130,849.20 and 52,399.20

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Solution

The fourth proportional to 87,434.40, 130,849.20 and 52,399.20 is: 78,417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,434.40 : 130,849.20 = 52,399.20 : x
  2. Step 2: Convert to fraction form
    87,434.40/130,849.20 = 52,399.20/x
  3. Step 3: Cross multiply
    87,434.40x = 130,849.20 × 52,399.20
  4. Step 4: Simplify right side
    87,434.40x = 6,856,393,400.64
  5. Step 5: Solve for x
    x = 6,856,393,400.64/87,434.40
  6. Step 6: Final answer
    x = 78,417.57

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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.