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Finding the Fourth Proportional to 90,591.70, 135,941.02 and 34,479.06

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Solution

The fourth proportional to 90,591.70, 135,941.02 and 34,479.06 is: 51,738.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,591.70 : 135,941.02 = 34,479.06 : x
  2. Step 2: Convert to fraction form
    90,591.70/135,941.02 = 34,479.06/x
  3. Step 3: Cross multiply
    90,591.70x = 135,941.02 × 34,479.06
  4. Step 4: Simplify right side
    90,591.70x = 4,687,118,585.04
  5. Step 5: Solve for x
    x = 4,687,118,585.04/90,591.70
  6. Step 6: Final answer
    x = 51,738.94

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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.