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Finding the Fourth Proportional to 90,093.92, 134,937.84 and 43,381.76

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Solution

The fourth proportional to 90,093.92, 134,937.84 and 43,381.76 is: 64,974.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,093.92 : 134,937.84 = 43,381.76 : x
  2. Step 2: Convert to fraction form
    90,093.92/134,937.84 = 43,381.76/x
  3. Step 3: Cross multiply
    90,093.92x = 134,937.84 × 43,381.76
  4. Step 4: Simplify right side
    90,093.92x = 5,853,840,989.80
  5. Step 5: Solve for x
    x = 5,853,840,989.80/90,093.92
  6. Step 6: Final answer
    x = 64,974.87

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1.5x scale

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.