Home / 87,930.15-121,344.17-47,644.22

Finding the Fourth Proportional to 87,930.15, 121,344.17 and 47,644.22

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Solution

The fourth proportional to 87,930.15, 121,344.17 and 47,644.22 is: 65,749.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,930.15 : 121,344.17 = 47,644.22 : x
  2. Step 2: Convert to fraction form
    87,930.15/121,344.17 = 47,644.22/x
  3. Step 3: Cross multiply
    87,930.15x = 121,344.17 × 47,644.22
  4. Step 4: Simplify right side
    87,930.15x = 5,781,347,486.26
  5. Step 5: Solve for x
    x = 5,781,347,486.26/87,930.15
  6. Step 6: Final answer
    x = 65,749.32

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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.