Home / 78,405.27-117,841.19-36,881.43

Finding the Fourth Proportional to 78,405.27, 117,841.19 and 36,881.43

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Solution

The fourth proportional to 78,405.27, 117,841.19 and 36,881.43 is: 55,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,405.27 : 117,841.19 = 36,881.43 : x
  2. Step 2: Convert to fraction form
    78,405.27/117,841.19 = 36,881.43/x
  3. Step 3: Cross multiply
    78,405.27x = 117,841.19 × 36,881.43
  4. Step 4: Simplify right side
    78,405.27x = 4,346,151,600.10
  5. Step 5: Solve for x
    x = 4,346,151,600.10/78,405.27
  6. Step 6: Final answer
    x = 55,431.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.