Home / 90,871.39-136,320.05-28,546.75

Finding the Fourth Proportional to 90,871.39, 136,320.05 and 28,546.75

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Solution

The fourth proportional to 90,871.39, 136,320.05 and 28,546.75 is: 42,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.39 : 136,320.05 = 28,546.75 : x
  2. Step 2: Convert to fraction form
    90,871.39/136,320.05 = 28,546.75/x
  3. Step 3: Cross multiply
    90,871.39x = 136,320.05 × 28,546.75
  4. Step 4: Simplify right side
    90,871.39x = 3,891,494,387.34
  5. Step 5: Solve for x
    x = 3,891,494,387.34/90,871.39
  6. Step 6: Final answer
    x = 42,824.20

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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.