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Finding the Fourth Proportional to 91,435.97, 125,901.25 and 80,041.70

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Solution

The fourth proportional to 91,435.97, 125,901.25 and 80,041.70 is: 110,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,435.97 : 125,901.25 = 80,041.70 : x
  2. Step 2: Convert to fraction form
    91,435.97/125,901.25 = 80,041.70/x
  3. Step 3: Cross multiply
    91,435.97x = 125,901.25 × 80,041.70
  4. Step 4: Simplify right side
    91,435.97x = 10,077,350,196.77
  5. Step 5: Solve for x
    x = 10,077,350,196.77/91,435.97
  6. Step 6: Final answer
    x = 110,212.10

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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.