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Finding the Fourth Proportional to 80,958.93, 111,731.36 and 60,505.47

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Solution

The fourth proportional to 80,958.93, 111,731.36 and 60,505.47 is: 83,503.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,958.93 : 111,731.36 = 60,505.47 : x
  2. Step 2: Convert to fraction form
    80,958.93/111,731.36 = 60,505.47/x
  3. Step 3: Cross multiply
    80,958.93x = 111,731.36 × 60,505.47
  4. Step 4: Simplify right side
    80,958.93x = 6,760,358,148.01
  5. Step 5: Solve for x
    x = 6,760,358,148.01/80,958.93
  6. Step 6: Final answer
    x = 83,503.55

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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.