Home / 91,419.01-137,131.53-31,446.88

Finding the Fourth Proportional to 91,419.01, 137,131.53 and 31,446.88

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Solution

The fourth proportional to 91,419.01, 137,131.53 and 31,446.88 is: 47,171.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,419.01 : 137,131.53 = 31,446.88 : x
  2. Step 2: Convert to fraction form
    91,419.01/137,131.53 = 31,446.88/x
  3. Step 3: Cross multiply
    91,419.01x = 137,131.53 × 31,446.88
  4. Step 4: Simplify right side
    91,419.01x = 4,312,358,768.13
  5. Step 5: Solve for x
    x = 4,312,358,768.13/91,419.01
  6. Step 6: Final answer
    x = 47,171.36

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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.