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Finding the Fourth Proportional to 108,682.80, 163,072.80 and 38,612.40

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Solution

The fourth proportional to 108,682.80, 163,072.80 and 38,612.40 is: 57,935.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,682.80 : 163,072.80 = 38,612.40 : x
  2. Step 2: Convert to fraction form
    108,682.80/163,072.80 = 38,612.40/x
  3. Step 3: Cross multiply
    108,682.80x = 163,072.80 × 38,612.40
  4. Step 4: Simplify right side
    108,682.80x = 6,296,632,182.72
  5. Step 5: Solve for x
    x = 6,296,632,182.72/108,682.80
  6. Step 6: Final answer
    x = 57,935.87

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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.