Home / 91,534.20-137,307.54-28,359.90

Finding the Fourth Proportional to 91,534.20, 137,307.54 and 28,359.90

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Solution

The fourth proportional to 91,534.20, 137,307.54 and 28,359.90 is: 42,541.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,534.20 : 137,307.54 = 28,359.90 : x
  2. Step 2: Convert to fraction form
    91,534.20/137,307.54 = 28,359.90/x
  3. Step 3: Cross multiply
    91,534.20x = 137,307.54 × 28,359.90
  4. Step 4: Simplify right side
    91,534.20x = 3,894,028,103.65
  5. Step 5: Solve for x
    x = 3,894,028,103.65/91,534.20
  6. Step 6: Final answer
    x = 42,541.78

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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.