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Finding the Fourth Proportional to 53,819.68, 80,740.08 and 18,760.48

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Solution

The fourth proportional to 53,819.68, 80,740.08 and 18,760.48 is: 28,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,819.68 : 80,740.08 = 18,760.48 : x
  2. Step 2: Convert to fraction form
    53,819.68/80,740.08 = 18,760.48/x
  3. Step 3: Cross multiply
    53,819.68x = 80,740.08 × 18,760.48
  4. Step 4: Simplify right side
    53,819.68x = 1,514,722,656.04
  5. Step 5: Solve for x
    x = 1,514,722,656.04/53,819.68
  6. Step 6: Final answer
    x = 28,144.40

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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.