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Finding the Fourth Proportional to 78,877.77, 108,850.10 and 43,067.03

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Solution

The fourth proportional to 78,877.77, 108,850.10 and 43,067.03 is: 59,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,877.77 : 108,850.10 = 43,067.03 : x
  2. Step 2: Convert to fraction form
    78,877.77/108,850.10 = 43,067.03/x
  3. Step 3: Cross multiply
    78,877.77x = 108,850.10 × 43,067.03
  4. Step 4: Simplify right side
    78,877.77x = 4,687,849,762.62
  5. Step 5: Solve for x
    x = 4,687,849,762.62/78,877.77
  6. Step 6: Final answer
    x = 59,431.82

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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.