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Finding the Fourth Proportional to 78,877.51, 108,850.13 and 43,067.41

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Solution

The fourth proportional to 78,877.51, 108,850.13 and 43,067.41 is: 59,432.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,877.51 : 108,850.13 = 43,067.41 : x
  2. Step 2: Convert to fraction form
    78,877.51/108,850.13 = 43,067.41/x
  3. Step 3: Cross multiply
    78,877.51x = 108,850.13 × 43,067.41
  4. Step 4: Simplify right side
    78,877.51x = 4,687,892,633.01
  5. Step 5: Solve for x
    x = 4,687,892,633.01/78,877.51
  6. Step 6: Final answer
    x = 59,432.57

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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.