Home / 91,478.60-137,213.78-38,148.62

Finding the Fourth Proportional to 91,478.60, 137,213.78 and 38,148.62

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Solution

The fourth proportional to 91,478.60, 137,213.78 and 38,148.62 is: 57,221.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,478.60 : 137,213.78 = 38,148.62 : x
  2. Step 2: Convert to fraction form
    91,478.60/137,213.78 = 38,148.62/x
  3. Step 3: Cross multiply
    91,478.60x = 137,213.78 × 38,148.62
  4. Step 4: Simplify right side
    91,478.60x = 5,234,516,351.98
  5. Step 5: Solve for x
    x = 5,234,516,351.98/91,478.60
  6. Step 6: Final answer
    x = 57,221.21

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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.