Home / 91,508.12-126,360-57,573.18

Finding the Fourth Proportional to 91,508.12, 126,360 and 57,573.18

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Solution

The fourth proportional to 91,508.12, 126,360 and 57,573.18 is: 79,500.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,508.12 : 126,360 = 57,573.18 : x
  2. Step 2: Convert to fraction form
    91,508.12/126,360 = 57,573.18/x
  3. Step 3: Cross multiply
    91,508.12x = 126,360 × 57,573.18
  4. Step 4: Simplify right side
    91,508.12x = 7,274,947,024.80
  5. Step 5: Solve for x
    x = 7,274,947,024.80/91,508.12
  6. Step 6: Final answer
    x = 79,500.56

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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.