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Finding the Fourth Proportional to 123,581.75, 185,370.04 and 39,347.72

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Solution

The fourth proportional to 123,581.75, 185,370.04 and 39,347.72 is: 59,020.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,581.75 : 185,370.04 = 39,347.72 : x
  2. Step 2: Convert to fraction form
    123,581.75/185,370.04 = 39,347.72/x
  3. Step 3: Cross multiply
    123,581.75x = 185,370.04 × 39,347.72
  4. Step 4: Simplify right side
    123,581.75x = 7,293,889,401.15
  5. Step 5: Solve for x
    x = 7,293,889,401.15/123,581.75
  6. Step 6: Final answer
    x = 59,020.76

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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.