Home / 90,517.68-135,744.12-31,337.46

Finding the Fourth Proportional to 90,517.68, 135,744.12 and 31,337.46

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Solution

The fourth proportional to 90,517.68, 135,744.12 and 31,337.46 is: 46,994.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,517.68 : 135,744.12 = 31,337.46 : x
  2. Step 2: Convert to fraction form
    90,517.68/135,744.12 = 31,337.46/x
  3. Step 3: Cross multiply
    90,517.68x = 135,744.12 × 31,337.46
  4. Step 4: Simplify right side
    90,517.68x = 4,253,875,930.74
  5. Step 5: Solve for x
    x = 4,253,875,930.74/90,517.68
  6. Step 6: Final answer
    x = 46,994.97

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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.