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Finding the Fourth Proportional to 108,478.98, 162,770.31 and 38,391.30

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Solution

The fourth proportional to 108,478.98, 162,770.31 and 38,391.30 is: 57,605.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,478.98 : 162,770.31 = 38,391.30 : x
  2. Step 2: Convert to fraction form
    108,478.98/162,770.31 = 38,391.30/x
  3. Step 3: Cross multiply
    108,478.98x = 162,770.31 × 38,391.30
  4. Step 4: Simplify right side
    108,478.98x = 6,248,963,802.30
  5. Step 5: Solve for x
    x = 6,248,963,802.30/108,478.98
  6. Step 6: Final answer
    x = 57,605.30

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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.