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Finding the Fourth Proportional to 40,404.16, 60,539.41 and 20,655.55

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Solution

The fourth proportional to 40,404.16, 60,539.41 and 20,655.55 is: 30,949.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,404.16 : 60,539.41 = 20,655.55 : x
  2. Step 2: Convert to fraction form
    40,404.16/60,539.41 = 20,655.55/x
  3. Step 3: Cross multiply
    40,404.16x = 60,539.41 × 20,655.55
  4. Step 4: Simplify right side
    40,404.16x = 1,250,474,404.25
  5. Step 5: Solve for x
    x = 1,250,474,404.25/40,404.16
  6. Step 6: Final answer
    x = 30,949.15

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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.