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Finding the Fourth Proportional to 66,115.35, 91,240.77 and 35,901.95

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Solution

The fourth proportional to 66,115.35, 91,240.77 and 35,901.95 is: 49,545.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,115.35 : 91,240.77 = 35,901.95 : x
  2. Step 2: Convert to fraction form
    66,115.35/91,240.77 = 35,901.95/x
  3. Step 3: Cross multiply
    66,115.35x = 91,240.77 × 35,901.95
  4. Step 4: Simplify right side
    66,115.35x = 3,275,721,106.30
  5. Step 5: Solve for x
    x = 3,275,721,106.30/66,115.35
  6. Step 6: Final answer
    x = 49,545.55

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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.