Home / 40,015.68-55,155.78-28,377.78

Finding the Fourth Proportional to 40,015.68, 55,155.78 and 28,377.78

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Solution

The fourth proportional to 40,015.68, 55,155.78 and 28,377.78 is: 39,114.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,015.68 : 55,155.78 = 28,377.78 : x
  2. Step 2: Convert to fraction form
    40,015.68/55,155.78 = 28,377.78/x
  3. Step 3: Cross multiply
    40,015.68x = 55,155.78 × 28,377.78
  4. Step 4: Simplify right side
    40,015.68x = 1,565,198,590.57
  5. Step 5: Solve for x
    x = 1,565,198,590.57/40,015.68
  6. Step 6: Final answer
    x = 39,114.63

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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.