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Finding the Fourth Proportional to 40,825.98, 61,211.12 and 20,786.22

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Solution

The fourth proportional to 40,825.98, 61,211.12 and 20,786.22 is: 31,165.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,825.98 : 61,211.12 = 20,786.22 : x
  2. Step 2: Convert to fraction form
    40,825.98/61,211.12 = 20,786.22/x
  3. Step 3: Cross multiply
    40,825.98x = 61,211.12 × 20,786.22
  4. Step 4: Simplify right side
    40,825.98x = 1,272,347,806.77
  5. Step 5: Solve for x
    x = 1,272,347,806.77/40,825.98
  6. Step 6: Final answer
    x = 31,165.15

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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.