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Finding the Fourth Proportional to 80,866.56, 111,642.16 and 54,054.48

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Solution

The fourth proportional to 80,866.56, 111,642.16 and 54,054.48 is: 74,626.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,866.56 : 111,642.16 = 54,054.48 : x
  2. Step 2: Convert to fraction form
    80,866.56/111,642.16 = 54,054.48/x
  3. Step 3: Cross multiply
    80,866.56x = 111,642.16 × 54,054.48
  4. Step 4: Simplify right side
    80,866.56x = 6,034,758,904.88
  5. Step 5: Solve for x
    x = 6,034,758,904.88/80,866.56
  6. Step 6: Final answer
    x = 74,626.14

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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.