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Finding the Fourth Proportional to 82,486.82, 123,720.06 and 35,120.96

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Solution

The fourth proportional to 82,486.82, 123,720.06 and 35,120.96 is: 52,677.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,486.82 : 123,720.06 = 35,120.96 : x
  2. Step 2: Convert to fraction form
    82,486.82/123,720.06 = 35,120.96/x
  3. Step 3: Cross multiply
    82,486.82x = 123,720.06 × 35,120.96
  4. Step 4: Simplify right side
    82,486.82x = 4,345,167,278.46
  5. Step 5: Solve for x
    x = 4,345,167,278.46/82,486.82
  6. Step 6: Final answer
    x = 52,677.11

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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.