Home / 91,489.23-137,199.72-31,500.75

Finding the Fourth Proportional to 91,489.23, 137,199.72 and 31,500.75

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Solution

The fourth proportional to 91,489.23, 137,199.72 and 31,500.75 is: 47,239.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,489.23 : 137,199.72 = 31,500.75 : x
  2. Step 2: Convert to fraction form
    91,489.23/137,199.72 = 31,500.75/x
  3. Step 3: Cross multiply
    91,489.23x = 137,199.72 × 31,500.75
  4. Step 4: Simplify right side
    91,489.23x = 4,321,894,079.79
  5. Step 5: Solve for x
    x = 4,321,894,079.79/91,489.23
  6. Step 6: Final answer
    x = 47,239.38

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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.