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Finding the Fourth Proportional to 54,695.40, 82,043.10 and 45,364.20

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Solution

The fourth proportional to 54,695.40, 82,043.10 and 45,364.20 is: 68,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,695.40 : 82,043.10 = 45,364.20 : x
  2. Step 2: Convert to fraction form
    54,695.40/82,043.10 = 45,364.20/x
  3. Step 3: Cross multiply
    54,695.40x = 82,043.10 × 45,364.20
  4. Step 4: Simplify right side
    54,695.40x = 3,721,819,597.02
  5. Step 5: Solve for x
    x = 3,721,819,597.02/54,695.40
  6. Step 6: Final answer
    x = 68,046.30

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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.