Home / 81,058.92-121,505.23-31,125.57

Finding the Fourth Proportional to 81,058.92, 121,505.23 and 31,125.57

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Solution

The fourth proportional to 81,058.92, 121,505.23 and 31,125.57 is: 46,656.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,058.92 : 121,505.23 = 31,125.57 : x
  2. Step 2: Convert to fraction form
    81,058.92/121,505.23 = 31,125.57/x
  3. Step 3: Cross multiply
    81,058.92x = 121,505.23 × 31,125.57
  4. Step 4: Simplify right side
    81,058.92x = 3,781,919,541.73
  5. Step 5: Solve for x
    x = 3,781,919,541.73/81,058.92
  6. Step 6: Final answer
    x = 46,656.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.