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Finding the Fourth Proportional to 76,995.38, 115,531.38 and 43,240.46

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Solution

The fourth proportional to 76,995.38, 115,531.38 and 43,240.46 is: 64,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,995.38 : 115,531.38 = 43,240.46 : x
  2. Step 2: Convert to fraction form
    76,995.38/115,531.38 = 43,240.46/x
  3. Step 3: Cross multiply
    76,995.38x = 115,531.38 × 43,240.46
  4. Step 4: Simplify right side
    76,995.38x = 4,995,630,015.63
  5. Step 5: Solve for x
    x = 4,995,630,015.63/76,995.38
  6. Step 6: Final answer
    x = 64,882.20

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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.