Home / 91,219.92-125,885.52-57,229.80

Finding the Fourth Proportional to 91,219.92, 125,885.52 and 57,229.80

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Solution

The fourth proportional to 91,219.92, 125,885.52 and 57,229.80 is: 78,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,219.92 : 125,885.52 = 57,229.80 : x
  2. Step 2: Convert to fraction form
    91,219.92/125,885.52 = 57,229.80/x
  3. Step 3: Cross multiply
    91,219.92x = 125,885.52 × 57,229.80
  4. Step 4: Simplify right side
    91,219.92x = 7,204,403,132.50
  5. Step 5: Solve for x
    x = 7,204,403,132.50/91,219.92
  6. Step 6: Final answer
    x = 78,978.40

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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.