Home / 87,850.20-121,167.76-57,230.04

Finding the Fourth Proportional to 87,850.20, 121,167.76 and 57,230.04

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Solution

The fourth proportional to 87,850.20, 121,167.76 and 57,230.04 is: 78,934.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,850.20 : 121,167.76 = 57,230.04 : x
  2. Step 2: Convert to fraction form
    87,850.20/121,167.76 = 57,230.04/x
  3. Step 3: Cross multiply
    87,850.20x = 121,167.76 × 57,230.04
  4. Step 4: Simplify right side
    87,850.20x = 6,934,435,751.51
  5. Step 5: Solve for x
    x = 6,934,435,751.51/87,850.20
  6. Step 6: Final answer
    x = 78,934.77

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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.