Home / 78,827.56-108,781.44-43,016.78

Finding the Fourth Proportional to 78,827.56, 108,781.44 and 43,016.78

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Solution

The fourth proportional to 78,827.56, 108,781.44 and 43,016.78 is: 59,362.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,827.56 : 108,781.44 = 43,016.78 : x
  2. Step 2: Convert to fraction form
    78,827.56/108,781.44 = 43,016.78/x
  3. Step 3: Cross multiply
    78,827.56x = 108,781.44 × 43,016.78
  4. Step 4: Simplify right side
    78,827.56x = 4,679,427,272.56
  5. Step 5: Solve for x
    x = 4,679,427,272.56/78,827.56
  6. Step 6: Final answer
    x = 59,362.83

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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.