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Finding the Fourth Proportional to 91,115.28, 125,744.67 and 50,829.12

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Solution

The fourth proportional to 91,115.28, 125,744.67 and 50,829.12 is: 70,147.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,115.28 : 125,744.67 = 50,829.12 : x
  2. Step 2: Convert to fraction form
    91,115.28/125,744.67 = 50,829.12/x
  3. Step 3: Cross multiply
    91,115.28x = 125,744.67 × 50,829.12
  4. Step 4: Simplify right side
    91,115.28x = 6,391,490,920.79
  5. Step 5: Solve for x
    x = 6,391,490,920.79/91,115.28
  6. Step 6: Final answer
    x = 70,147.30

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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.