Home / 91,419.30-126,213.12-57,456.54

Finding the Fourth Proportional to 91,419.30, 126,213.12 and 57,456.54

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Solution

The fourth proportional to 91,419.30, 126,213.12 and 57,456.54 is: 79,324.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,419.30 : 126,213.12 = 57,456.54 : x
  2. Step 2: Convert to fraction form
    91,419.30/126,213.12 = 57,456.54/x
  3. Step 3: Cross multiply
    91,419.30x = 126,213.12 × 57,456.54
  4. Step 4: Simplify right side
    91,419.30x = 7,251,769,177.80
  5. Step 5: Solve for x
    x = 7,251,769,177.80/91,419.30
  6. Step 6: Final answer
    x = 79,324.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.