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Finding the Fourth Proportional to 40,662.17, 60,961.98 and 20,655.22

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Solution

The fourth proportional to 40,662.17, 60,961.98 and 20,655.22 is: 30,966.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,662.17 : 60,961.98 = 20,655.22 : x
  2. Step 2: Convert to fraction form
    40,662.17/60,961.98 = 20,655.22/x
  3. Step 3: Cross multiply
    40,662.17x = 60,961.98 × 20,655.22
  4. Step 4: Simplify right side
    40,662.17x = 1,259,182,700.45
  5. Step 5: Solve for x
    x = 1,259,182,700.45/40,662.17
  6. Step 6: Final answer
    x = 30,966.94

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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.