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Finding the Fourth Proportional to 54,274.52, 80,878.78 and 52,490.72

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Solution

The fourth proportional to 54,274.52, 80,878.78 and 52,490.72 is: 78,220.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,274.52 : 80,878.78 = 52,490.72 : x
  2. Step 2: Convert to fraction form
    54,274.52/80,878.78 = 52,490.72/x
  3. Step 3: Cross multiply
    54,274.52x = 80,878.78 × 52,490.72
  4. Step 4: Simplify right side
    54,274.52x = 4,245,385,394.92
  5. Step 5: Solve for x
    x = 4,245,385,394.92/54,274.52
  6. Step 6: Final answer
    x = 78,220.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.