Home / 40,478.95-55,855.20-22,571.38

Finding the Fourth Proportional to 40,478.95, 55,855.20 and 22,571.38

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Solution

The fourth proportional to 40,478.95, 55,855.20 and 22,571.38 is: 31,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,478.95 : 55,855.20 = 22,571.38 : x
  2. Step 2: Convert to fraction form
    40,478.95/55,855.20 = 22,571.38/x
  3. Step 3: Cross multiply
    40,478.95x = 55,855.20 × 22,571.38
  4. Step 4: Simplify right side
    40,478.95x = 1,260,728,944.18
  5. Step 5: Solve for x
    x = 1,260,728,944.18/40,478.95
  6. Step 6: Final answer
    x = 31,145.30

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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.