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Finding the Fourth Proportional to 54,041.20, 80,903.40 and 38,489.20

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Solution

The fourth proportional to 54,041.20, 80,903.40 and 38,489.20 is: 57,620.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,041.20 : 80,903.40 = 38,489.20 : x
  2. Step 2: Convert to fraction form
    54,041.20/80,903.40 = 38,489.20/x
  3. Step 3: Cross multiply
    54,041.20x = 80,903.40 × 38,489.20
  4. Step 4: Simplify right side
    54,041.20x = 3,113,907,143.28
  5. Step 5: Solve for x
    x = 3,113,907,143.28/54,041.20
  6. Step 6: Final answer
    x = 57,620.98

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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.