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Finding the Fourth Proportional to 40,679.59, 61,028.59 and 21,959.23

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Solution

The fourth proportional to 40,679.59, 61,028.59 and 21,959.23 is: 32,943.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,679.59 : 61,028.59 = 21,959.23 : x
  2. Step 2: Convert to fraction form
    40,679.59/61,028.59 = 21,959.23/x
  3. Step 3: Cross multiply
    40,679.59x = 61,028.59 × 21,959.23
  4. Step 4: Simplify right side
    40,679.59x = 1,340,140,620.88
  5. Step 5: Solve for x
    x = 1,340,140,620.88/40,679.59
  6. Step 6: Final answer
    x = 32,943.81

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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.