Home / 87,890.46-121,287.87-47,603.22

Finding the Fourth Proportional to 87,890.46, 121,287.87 and 47,603.22

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Solution

The fourth proportional to 87,890.46, 121,287.87 and 47,603.22 is: 65,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,890.46 : 121,287.87 = 47,603.22 : x
  2. Step 2: Convert to fraction form
    87,890.46/121,287.87 = 47,603.22/x
  3. Step 3: Cross multiply
    87,890.46x = 121,287.87 × 47,603.22
  4. Step 4: Simplify right side
    87,890.46x = 5,773,693,158.94
  5. Step 5: Solve for x
    x = 5,773,693,158.94/87,890.46
  6. Step 6: Final answer
    x = 65,691.92

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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.