Home / 91,819.80-137,621.70-52,414.20

Finding the Fourth Proportional to 91,819.80, 137,621.70 and 52,414.20

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Solution

The fourth proportional to 91,819.80, 137,621.70 and 52,414.20 is: 78,559.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,819.80 : 137,621.70 = 52,414.20 : x
  2. Step 2: Convert to fraction form
    91,819.80/137,621.70 = 52,414.20/x
  3. Step 3: Cross multiply
    91,819.80x = 137,621.70 × 52,414.20
  4. Step 4: Simplify right side
    91,819.80x = 7,213,331,308.14
  5. Step 5: Solve for x
    x = 7,213,331,308.14/91,819.80
  6. Step 6: Final answer
    x = 78,559.65

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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.