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Finding the Fourth Proportional to 91,116.44, 125,755.32 and 75,982.40

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Solution

The fourth proportional to 91,116.44, 125,755.32 and 75,982.40 is: 104,867.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,116.44 : 125,755.32 = 75,982.40 : x
  2. Step 2: Convert to fraction form
    91,116.44/125,755.32 = 75,982.40/x
  3. Step 3: Cross multiply
    91,116.44x = 125,755.32 × 75,982.40
  4. Step 4: Simplify right side
    91,116.44x = 9,555,191,026.37
  5. Step 5: Solve for x
    x = 9,555,191,026.37/91,116.44
  6. Step 6: Final answer
    x = 104,867.91

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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.