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Finding the Fourth Proportional to 91,171.71, 125,764.38 and 54,847.94

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Solution

The fourth proportional to 91,171.71, 125,764.38 and 54,847.94 is: 75,658.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,171.71 : 125,764.38 = 54,847.94 : x
  2. Step 2: Convert to fraction form
    91,171.71/125,764.38 = 54,847.94/x
  3. Step 3: Cross multiply
    91,171.71x = 125,764.38 × 54,847.94
  4. Step 4: Simplify right side
    91,171.71x = 6,897,916,539.56
  5. Step 5: Solve for x
    x = 6,897,916,539.56/91,171.71
  6. Step 6: Final answer
    x = 75,658.52

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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.