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Finding the Fourth Proportional to 91,687.53, 126,529.12 and 53,473.45

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Solution

The fourth proportional to 91,687.53, 126,529.12 and 53,473.45 is: 73,793.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,687.53 : 126,529.12 = 53,473.45 : x
  2. Step 2: Convert to fraction form
    91,687.53/126,529.12 = 53,473.45/x
  3. Step 3: Cross multiply
    91,687.53x = 126,529.12 × 53,473.45
  4. Step 4: Simplify right side
    91,687.53x = 6,765,948,571.86
  5. Step 5: Solve for x
    x = 6,765,948,571.86/91,687.53
  6. Step 6: Final answer
    x = 73,793.55

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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.