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Finding the Fourth Proportional to 91,080.71, 125,691.50 and 50,243.92

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Solution

The fourth proportional to 91,080.71, 125,691.50 and 50,243.92 is: 69,336.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,080.71 : 125,691.50 = 50,243.92 : x
  2. Step 2: Convert to fraction form
    91,080.71/125,691.50 = 50,243.92/x
  3. Step 3: Cross multiply
    91,080.71x = 125,691.50 × 50,243.92
  4. Step 4: Simplify right side
    91,080.71x = 6,315,233,387.85
  5. Step 5: Solve for x
    x = 6,315,233,387.85/91,080.71
  6. Step 6: Final answer
    x = 69,336.67

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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.