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Finding the Fourth Proportional to 70,397.18, 105,630.46 and 32,959.78

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Solution

The fourth proportional to 70,397.18, 105,630.46 and 32,959.78 is: 49,455.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,397.18 : 105,630.46 = 32,959.78 : x
  2. Step 2: Convert to fraction form
    70,397.18/105,630.46 = 32,959.78/x
  3. Step 3: Cross multiply
    70,397.18x = 105,630.46 × 32,959.78
  4. Step 4: Simplify right side
    70,397.18x = 3,481,556,722.90
  5. Step 5: Solve for x
    x = 3,481,556,722.90/70,397.18
  6. Step 6: Final answer
    x = 49,455.91

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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.