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Finding the Fourth Proportional to 78,959.88, 108,964.92 and 43,150.44

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Solution

The fourth proportional to 78,959.88, 108,964.92 and 43,150.44 is: 59,547.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,959.88 : 108,964.92 = 43,150.44 : x
  2. Step 2: Convert to fraction form
    78,959.88/108,964.92 = 43,150.44/x
  3. Step 3: Cross multiply
    78,959.88x = 108,964.92 × 43,150.44
  4. Step 4: Simplify right side
    78,959.88x = 4,701,884,242.56
  5. Step 5: Solve for x
    x = 4,701,884,242.56/78,959.88
  6. Step 6: Final answer
    x = 59,547.76

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1.5x scale

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.