Home / 91,319.72-126,101.49-57,387.20

Finding the Fourth Proportional to 91,319.72, 126,101.49 and 57,387.20

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Solution

The fourth proportional to 91,319.72, 126,101.49 and 57,387.20 is: 79,244.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,319.72 : 126,101.49 = 57,387.20 : x
  2. Step 2: Convert to fraction form
    91,319.72/126,101.49 = 57,387.20/x
  3. Step 3: Cross multiply
    91,319.72x = 126,101.49 × 57,387.20
  4. Step 4: Simplify right side
    91,319.72x = 7,236,611,426.93
  5. Step 5: Solve for x
    x = 7,236,611,426.93/91,319.72
  6. Step 6: Final answer
    x = 79,244.78

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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.