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Finding the Fourth Proportional to 91,141.50, 125,755.12 and 52,878.88

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Solution

The fourth proportional to 91,141.50, 125,755.12 and 52,878.88 is: 72,961.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,141.50 : 125,755.12 = 52,878.88 : x
  2. Step 2: Convert to fraction form
    91,141.50/125,755.12 = 52,878.88/x
  3. Step 3: Cross multiply
    91,141.50x = 125,755.12 × 52,878.88
  4. Step 4: Simplify right side
    91,141.50x = 6,649,789,899.87
  5. Step 5: Solve for x
    x = 6,649,789,899.87/91,141.50
  6. Step 6: Final answer
    x = 72,961.16

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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.