Home / 87,849.20-121,166.38-57,229.04

Finding the Fourth Proportional to 87,849.20, 121,166.38 and 57,229.04

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Solution

The fourth proportional to 87,849.20, 121,166.38 and 57,229.04 is: 78,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,849.20 : 121,166.38 = 57,229.04 : x
  2. Step 2: Convert to fraction form
    87,849.20/121,166.38 = 57,229.04/x
  3. Step 3: Cross multiply
    87,849.20x = 121,166.38 × 57,229.04
  4. Step 4: Simplify right side
    87,849.20x = 6,934,235,982.13
  5. Step 5: Solve for x
    x = 6,934,235,982.13/87,849.20
  6. Step 6: Final answer
    x = 78,933.40

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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.