Home / 87,711.66-121,040.19-49,471.29

Finding the Fourth Proportional to 87,711.66, 121,040.19 and 49,471.29

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Solution

The fourth proportional to 87,711.66, 121,040.19 and 49,471.29 is: 68,269.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,711.66 : 121,040.19 = 49,471.29 : x
  2. Step 2: Convert to fraction form
    87,711.66/121,040.19 = 49,471.29/x
  3. Step 3: Cross multiply
    87,711.66x = 121,040.19 × 49,471.29
  4. Step 4: Simplify right side
    87,711.66x = 5,988,014,341.15
  5. Step 5: Solve for x
    x = 5,988,014,341.15/87,711.66
  6. Step 6: Final answer
    x = 68,269.31

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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.