Home / 40,686.20-61,029.30-21,003.20

Finding the Fourth Proportional to 40,686.20, 61,029.30 and 21,003.20

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Solution

The fourth proportional to 40,686.20, 61,029.30 and 21,003.20 is: 31,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,686.20 : 61,029.30 = 21,003.20 : x
  2. Step 2: Convert to fraction form
    40,686.20/61,029.30 = 21,003.20/x
  3. Step 3: Cross multiply
    40,686.20x = 61,029.30 × 21,003.20
  4. Step 4: Simplify right side
    40,686.20x = 1,281,810,593.76
  5. Step 5: Solve for x
    x = 1,281,810,593.76/40,686.20
  6. Step 6: Final answer
    x = 31,504.80

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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.