Home / 78,921.27-108,909.56-43,111.44

Finding the Fourth Proportional to 78,921.27, 108,909.56 and 43,111.44

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Solution

The fourth proportional to 78,921.27, 108,909.56 and 43,111.44 is: 59,492.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,921.27 : 108,909.56 = 43,111.44 : x
  2. Step 2: Convert to fraction form
    78,921.27/108,909.56 = 43,111.44/x
  3. Step 3: Cross multiply
    78,921.27x = 108,909.56 × 43,111.44
  4. Step 4: Simplify right side
    78,921.27x = 4,695,248,069.15
  5. Step 5: Solve for x
    x = 4,695,248,069.15/78,921.27
  6. Step 6: Final answer
    x = 59,492.81

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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.