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Finding the Fourth Proportional to 54,229.60, 81,336.90 and 16,815.40

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Solution

The fourth proportional to 54,229.60, 81,336.90 and 16,815.40 is: 25,220.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,229.60 : 81,336.90 = 16,815.40 : x
  2. Step 2: Convert to fraction form
    54,229.60/81,336.90 = 16,815.40/x
  3. Step 3: Cross multiply
    54,229.60x = 81,336.90 × 16,815.40
  4. Step 4: Simplify right side
    54,229.60x = 1,367,712,508.26
  5. Step 5: Solve for x
    x = 1,367,712,508.26/54,229.60
  6. Step 6: Final answer
    x = 25,220.77

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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.