Home / 91,422.04-137,136.04-31,449.88

Finding the Fourth Proportional to 91,422.04, 137,136.04 and 31,449.88

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Solution

The fourth proportional to 91,422.04, 137,136.04 and 31,449.88 is: 47,175.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,422.04 : 137,136.04 = 31,449.88 : x
  2. Step 2: Convert to fraction form
    91,422.04/137,136.04 = 31,449.88/x
  3. Step 3: Cross multiply
    91,422.04x = 137,136.04 × 31,449.88
  4. Step 4: Simplify right side
    91,422.04x = 4,312,912,001.68
  5. Step 5: Solve for x
    x = 4,312,912,001.68/91,422.04
  6. Step 6: Final answer
    x = 47,175.85

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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.