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Finding the Fourth Proportional to 70,650.57, 105,882.05 and 51,842.58

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Solution

The fourth proportional to 70,650.57, 105,882.05 and 51,842.58 is: 77,695.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,650.57 : 105,882.05 = 51,842.58 : x
  2. Step 2: Convert to fraction form
    70,650.57/105,882.05 = 51,842.58/x
  3. Step 3: Cross multiply
    70,650.57x = 105,882.05 × 51,842.58
  4. Step 4: Simplify right side
    70,650.57x = 5,489,198,388.48
  5. Step 5: Solve for x
    x = 5,489,198,388.48/70,650.57
  6. Step 6: Final answer
    x = 77,695.03

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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.