Home / 87,817.16-121,187.34-47,531.61

Finding the Fourth Proportional to 87,817.16, 121,187.34 and 47,531.61

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Solution

The fourth proportional to 87,817.16, 121,187.34 and 47,531.61 is: 65,593.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,817.16 : 121,187.34 = 47,531.61 : x
  2. Step 2: Convert to fraction form
    87,817.16/121,187.34 = 47,531.61/x
  3. Step 3: Cross multiply
    87,817.16x = 121,187.34 × 47,531.61
  4. Step 4: Simplify right side
    87,817.16x = 5,760,229,381.82
  5. Step 5: Solve for x
    x = 5,760,229,381.82/87,817.16
  6. Step 6: Final answer
    x = 65,593.44

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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.