Home / 91,549.20-137,404.80-54,062.40

Finding the Fourth Proportional to 91,549.20, 137,404.80 and 54,062.40

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Solution

The fourth proportional to 91,549.20, 137,404.80 and 54,062.40 is: 81,141.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,549.20 : 137,404.80 = 54,062.40 : x
  2. Step 2: Convert to fraction form
    91,549.20/137,404.80 = 54,062.40/x
  3. Step 3: Cross multiply
    91,549.20x = 137,404.80 × 54,062.40
  4. Step 4: Simplify right side
    91,549.20x = 7,428,433,259.52
  5. Step 5: Solve for x
    x = 7,428,433,259.52/91,549.20
  6. Step 6: Final answer
    x = 81,141.43

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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.