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Finding the Fourth Proportional to 79,565.67, 109,799.19 and 43,755.78

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Solution

The fourth proportional to 79,565.67, 109,799.19 and 43,755.78 is: 60,382.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,565.67 : 109,799.19 = 43,755.78 : x
  2. Step 2: Convert to fraction form
    79,565.67/109,799.19 = 43,755.78/x
  3. Step 3: Cross multiply
    79,565.67x = 109,799.19 × 43,755.78
  4. Step 4: Simplify right side
    79,565.67x = 4,804,349,201.82
  5. Step 5: Solve for x
    x = 4,804,349,201.82/79,565.67
  6. Step 6: Final answer
    x = 60,382.19

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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.