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Finding the Fourth Proportional to 80,891.98, 111,631.02 and 45,081.18

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Solution

The fourth proportional to 80,891.98, 111,631.02 and 45,081.18 is: 62,212.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,891.98 : 111,631.02 = 45,081.18 : x
  2. Step 2: Convert to fraction form
    80,891.98/111,631.02 = 45,081.18/x
  3. Step 3: Cross multiply
    80,891.98x = 111,631.02 × 45,081.18
  4. Step 4: Simplify right side
    80,891.98x = 5,032,458,106.20
  5. Step 5: Solve for x
    x = 5,032,458,106.20/80,891.98
  6. Step 6: Final answer
    x = 62,212.08

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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.