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Finding the Fourth Proportional to 108,865.65, 163,200.06 and 38,728.56

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Solution

The fourth proportional to 108,865.65, 163,200.06 and 38,728.56 is: 58,057.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,865.65 : 163,200.06 = 38,728.56 : x
  2. Step 2: Convert to fraction form
    108,865.65/163,200.06 = 38,728.56/x
  3. Step 3: Cross multiply
    108,865.65x = 163,200.06 × 38,728.56
  4. Step 4: Simplify right side
    108,865.65x = 6,320,503,315.71
  5. Step 5: Solve for x
    x = 6,320,503,315.71/108,865.65
  6. Step 6: Final answer
    x = 58,057.83

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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.