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Finding the Fourth Proportional to 90,814.80, 125,321.88 and 50,526.48

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Solution

The fourth proportional to 90,814.80, 125,321.88 and 50,526.48 is: 69,725.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,814.80 : 125,321.88 = 50,526.48 : x
  2. Step 2: Convert to fraction form
    90,814.80/125,321.88 = 50,526.48/x
  3. Step 3: Cross multiply
    90,814.80x = 125,321.88 × 50,526.48
  4. Step 4: Simplify right side
    90,814.80x = 6,332,073,463.38
  5. Step 5: Solve for x
    x = 6,332,073,463.38/90,814.80
  6. Step 6: Final answer
    x = 69,725.13

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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.