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Finding the Fourth Proportional to 35,432.80, 53,149.20 and 27,138.40

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Solution

The fourth proportional to 35,432.80, 53,149.20 and 27,138.40 is: 40,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,432.80 : 53,149.20 = 27,138.40 : x
  2. Step 2: Convert to fraction form
    35,432.80/53,149.20 = 27,138.40/x
  3. Step 3: Cross multiply
    35,432.80x = 53,149.20 × 27,138.40
  4. Step 4: Simplify right side
    35,432.80x = 1,442,384,249.28
  5. Step 5: Solve for x
    x = 1,442,384,249.28/35,432.80
  6. Step 6: Final answer
    x = 40,707.60

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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.