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Finding the Fourth Proportional to 79,187.92, 109,278.36 and 43,377.52

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Solution

The fourth proportional to 79,187.92, 109,278.36 and 43,377.52 is: 59,860.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,187.92 : 109,278.36 = 43,377.52 : x
  2. Step 2: Convert to fraction form
    79,187.92/109,278.36 = 43,377.52/x
  3. Step 3: Cross multiply
    79,187.92x = 109,278.36 × 43,377.52
  4. Step 4: Simplify right side
    79,187.92x = 4,740,224,246.47
  5. Step 5: Solve for x
    x = 4,740,224,246.47/79,187.92
  6. Step 6: Final answer
    x = 59,860.45

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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.