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Finding the Fourth Proportional to 91,117.31, 125,674.00 and 66,910.66

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Solution

The fourth proportional to 91,117.31, 125,674.00 and 66,910.66 is: 92,286.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,117.31 : 125,674.00 = 66,910.66 : x
  2. Step 2: Convert to fraction form
    91,117.31/125,674.00 = 66,910.66/x
  3. Step 3: Cross multiply
    91,117.31x = 125,674.00 × 66,910.66
  4. Step 4: Simplify right side
    91,117.31x = 8,408,929,803.38
  5. Step 5: Solve for x
    x = 8,408,929,803.38/91,117.31
  6. Step 6: Final answer
    x = 92,286.86

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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.