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Finding the Fourth Proportional to 40,638.96, 61,002 and 35,987.76

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Solution

The fourth proportional to 40,638.96, 61,002 and 35,987.76 is: 54,020.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,638.96 : 61,002 = 35,987.76 : x
  2. Step 2: Convert to fraction form
    40,638.96/61,002 = 35,987.76/x
  3. Step 3: Cross multiply
    40,638.96x = 61,002 × 35,987.76
  4. Step 4: Simplify right side
    40,638.96x = 2,195,325,335.52
  5. Step 5: Solve for x
    x = 2,195,325,335.52/40,638.96
  6. Step 6: Final answer
    x = 54,020.21

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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.