Home / 85,221.28-117,605.76-49,432.48

Finding the Fourth Proportional to 85,221.28, 117,605.76 and 49,432.48

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Solution

The fourth proportional to 85,221.28, 117,605.76 and 49,432.48 is: 68,217.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,221.28 : 117,605.76 = 49,432.48 : x
  2. Step 2: Convert to fraction form
    85,221.28/117,605.76 = 49,432.48/x
  3. Step 3: Cross multiply
    85,221.28x = 117,605.76 × 49,432.48
  4. Step 4: Simplify right side
    85,221.28x = 5,813,544,379.08
  5. Step 5: Solve for x
    x = 5,813,544,379.08/85,221.28
  6. Step 6: Final answer
    x = 68,217.05

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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.