Home / 87,998-121,387.56-52,152.80

Finding the Fourth Proportional to 87,998, 121,387.56 and 52,152.80

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Solution

The fourth proportional to 87,998, 121,387.56 and 52,152.80 is: 71,941.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,998 : 121,387.56 = 52,152.80 : x
  2. Step 2: Convert to fraction form
    87,998/121,387.56 = 52,152.80/x
  3. Step 3: Cross multiply
    87,998x = 121,387.56 × 52,152.80
  4. Step 4: Simplify right side
    87,998x = 6,330,701,139.17
  5. Step 5: Solve for x
    x = 6,330,701,139.17/87,998
  6. Step 6: Final answer
    x = 71,941.42

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1.5x scale

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.