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Finding the Fourth Proportional to 40,080.78, 60,081.12 and 18,983.34

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Solution

The fourth proportional to 40,080.78, 60,081.12 and 18,983.34 is: 28,456.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,080.78 : 60,081.12 = 18,983.34 : x
  2. Step 2: Convert to fraction form
    40,080.78/60,081.12 = 18,983.34/x
  3. Step 3: Cross multiply
    40,080.78x = 60,081.12 × 18,983.34
  4. Step 4: Simplify right side
    40,080.78x = 1,140,540,328.54
  5. Step 5: Solve for x
    x = 1,140,540,328.54/40,080.78
  6. Step 6: Final answer
    x = 28,456.04

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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.