Home / 40,168.64-55,371.28-28,198.40

Finding the Fourth Proportional to 40,168.64, 55,371.28 and 28,198.40

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Solution

The fourth proportional to 40,168.64, 55,371.28 and 28,198.40 is: 38,870.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,168.64 : 55,371.28 = 28,198.40 : x
  2. Step 2: Convert to fraction form
    40,168.64/55,371.28 = 28,198.40/x
  3. Step 3: Cross multiply
    40,168.64x = 55,371.28 × 28,198.40
  4. Step 4: Simplify right side
    40,168.64x = 1,561,381,501.95
  5. Step 5: Solve for x
    x = 1,561,381,501.95/40,168.64
  6. Step 6: Final answer
    x = 38,870.66

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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.