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Finding the Fourth Proportional to 40,720.20, 61,031.70 and 17,027.70

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Solution

The fourth proportional to 40,720.20, 61,031.70 and 17,027.70 is: 25,521.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,720.20 : 61,031.70 = 17,027.70 : x
  2. Step 2: Convert to fraction form
    40,720.20/61,031.70 = 17,027.70/x
  3. Step 3: Cross multiply
    40,720.20x = 61,031.70 × 17,027.70
  4. Step 4: Simplify right side
    40,720.20x = 1,039,229,478.09
  5. Step 5: Solve for x
    x = 1,039,229,478.09/40,720.20
  6. Step 6: Final answer
    x = 25,521.23

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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.