Home / 87,829.20-121,204.59-47,542.95

Finding the Fourth Proportional to 87,829.20, 121,204.59 and 47,542.95

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Solution

The fourth proportional to 87,829.20, 121,204.59 and 47,542.95 is: 65,609.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,829.20 : 121,204.59 = 47,542.95 : x
  2. Step 2: Convert to fraction form
    87,829.20/121,204.59 = 47,542.95/x
  3. Step 3: Cross multiply
    87,829.20x = 121,204.59 × 47,542.95
  4. Step 4: Simplify right side
    87,829.20x = 5,762,423,762.14
  5. Step 5: Solve for x
    x = 5,762,423,762.14/87,829.20
  6. Step 6: Final answer
    x = 65,609.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.