Home / 40,380.52-55,788.32-30,853.75

Finding the Fourth Proportional to 40,380.52, 55,788.32 and 30,853.75

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Solution

The fourth proportional to 40,380.52, 55,788.32 and 30,853.75 is: 42,626.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,380.52 : 55,788.32 = 30,853.75 : x
  2. Step 2: Convert to fraction form
    40,380.52/55,788.32 = 30,853.75/x
  3. Step 3: Cross multiply
    40,380.52x = 55,788.32 × 30,853.75
  4. Step 4: Simplify right side
    40,380.52x = 1,721,278,878.20
  5. Step 5: Solve for x
    x = 1,721,278,878.20/40,380.52
  6. Step 6: Final answer
    x = 42,626.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.