Home / 87,006.40-130,509.60-72,244.80

Finding the Fourth Proportional to 87,006.40, 130,509.60 and 72,244.80

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Solution

The fourth proportional to 87,006.40, 130,509.60 and 72,244.80 is: 108,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,006.40 : 130,509.60 = 72,244.80 : x
  2. Step 2: Convert to fraction form
    87,006.40/130,509.60 = 72,244.80/x
  3. Step 3: Cross multiply
    87,006.40x = 130,509.60 × 72,244.80
  4. Step 4: Simplify right side
    87,006.40x = 9,428,639,950.08
  5. Step 5: Solve for x
    x = 9,428,639,950.08/87,006.40
  6. Step 6: Final answer
    x = 108,367.20

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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.