Home / 87,920.90-121,330.68-47,635.69

Finding the Fourth Proportional to 87,920.90, 121,330.68 and 47,635.69

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Solution

The fourth proportional to 87,920.90, 121,330.68 and 47,635.69 is: 65,737.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,920.90 : 121,330.68 = 47,635.69 : x
  2. Step 2: Convert to fraction form
    87,920.90/121,330.68 = 47,635.69/x
  3. Step 3: Cross multiply
    87,920.90x = 121,330.68 × 47,635.69
  4. Step 4: Simplify right side
    87,920.90x = 5,779,670,659.97
  5. Step 5: Solve for x
    x = 5,779,670,659.97/87,920.90
  6. Step 6: Final answer
    x = 65,737.16

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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.