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Finding the Fourth Proportional to 108,638.88, 162,979.65 and 52,517.76

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Solution

The fourth proportional to 108,638.88, 162,979.65 and 52,517.76 is: 78,786.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,638.88 : 162,979.65 = 52,517.76 : x
  2. Step 2: Convert to fraction form
    108,638.88/162,979.65 = 52,517.76/x
  3. Step 3: Cross multiply
    108,638.88x = 162,979.65 × 52,517.76
  4. Step 4: Simplify right side
    108,638.88x = 8,559,326,143.58
  5. Step 5: Solve for x
    x = 8,559,326,143.58/108,638.88
  6. Step 6: Final answer
    x = 78,786.95

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1.5x scale

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.