Home / 90,998.31-125,581.31-50,711.72

Finding the Fourth Proportional to 90,998.31, 125,581.31 and 50,711.72

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Solution

The fourth proportional to 90,998.31, 125,581.31 and 50,711.72 is: 69,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,998.31 : 125,581.31 = 50,711.72 : x
  2. Step 2: Convert to fraction form
    90,998.31/125,581.31 = 50,711.72/x
  3. Step 3: Cross multiply
    90,998.31x = 125,581.31 × 50,711.72
  4. Step 4: Simplify right side
    90,998.31x = 6,368,444,229.95
  5. Step 5: Solve for x
    x = 6,368,444,229.95/90,998.31
  6. Step 6: Final answer
    x = 69,984.20

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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.