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Finding the Fourth Proportional to 54,718.40, 82,080.30 and 28,474.40

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Solution

The fourth proportional to 54,718.40, 82,080.30 and 28,474.40 is: 42,713.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,718.40 : 82,080.30 = 28,474.40 : x
  2. Step 2: Convert to fraction form
    54,718.40/82,080.30 = 28,474.40/x
  3. Step 3: Cross multiply
    54,718.40x = 82,080.30 × 28,474.40
  4. Step 4: Simplify right side
    54,718.40x = 2,337,187,294.32
  5. Step 5: Solve for x
    x = 2,337,187,294.32/54,718.40
  6. Step 6: Final answer
    x = 42,713.01

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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.