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Finding the Fourth Proportional to 53,488.80, 80,211.60 and 18,410.40

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Solution

The fourth proportional to 53,488.80, 80,211.60 and 18,410.40 is: 27,608.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,488.80 : 80,211.60 = 18,410.40 : x
  2. Step 2: Convert to fraction form
    53,488.80/80,211.60 = 18,410.40/x
  3. Step 3: Cross multiply
    53,488.80x = 80,211.60 × 18,410.40
  4. Step 4: Simplify right side
    53,488.80x = 1,476,727,640.64
  5. Step 5: Solve for x
    x = 1,476,727,640.64/53,488.80
  6. Step 6: Final answer
    x = 27,608.17

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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.