Home / 91,836.20-137,835.30-54,349.40

Finding the Fourth Proportional to 91,836.20, 137,835.30 and 54,349.40

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Solution

The fourth proportional to 91,836.20, 137,835.30 and 54,349.40 is: 81,572.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,836.20 : 137,835.30 = 54,349.40 : x
  2. Step 2: Convert to fraction form
    91,836.20/137,835.30 = 54,349.40/x
  3. Step 3: Cross multiply
    91,836.20x = 137,835.30 × 54,349.40
  4. Step 4: Simplify right side
    91,836.20x = 7,491,265,853.82
  5. Step 5: Solve for x
    x = 7,491,265,853.82/91,836.20
  6. Step 6: Final answer
    x = 81,572.04

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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.