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Finding the Fourth Proportional to 78,897.39, 108,877.67 and 43,087.29

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Solution

The fourth proportional to 78,897.39, 108,877.67 and 43,087.29 is: 59,460.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,897.39 : 108,877.67 = 43,087.29 : x
  2. Step 2: Convert to fraction form
    78,897.39/108,877.67 = 43,087.29/x
  3. Step 3: Cross multiply
    78,897.39x = 108,877.67 × 43,087.29
  4. Step 4: Simplify right side
    78,897.39x = 4,691,243,526.38
  5. Step 5: Solve for x
    x = 4,691,243,526.38/78,897.39
  6. Step 6: Final answer
    x = 59,460.06

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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.