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Finding the Fourth Proportional to 40,403.66, 60,538.66 and 20,655.05

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Solution

The fourth proportional to 40,403.66, 60,538.66 and 20,655.05 is: 30,948.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,403.66 : 60,538.66 = 20,655.05 : x
  2. Step 2: Convert to fraction form
    40,403.66/60,538.66 = 20,655.05/x
  3. Step 3: Cross multiply
    40,403.66x = 60,538.66 × 20,655.05
  4. Step 4: Simplify right side
    40,403.66x = 1,250,428,694.90
  5. Step 5: Solve for x
    x = 1,250,428,694.90/40,403.66
  6. Step 6: Final answer
    x = 30,948.41

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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.