Home / 40,290.78-55,602.54-22,387.20

Finding the Fourth Proportional to 40,290.78, 55,602.54 and 22,387.20

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Solution

The fourth proportional to 40,290.78, 55,602.54 and 22,387.20 is: 30,895.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,290.78 : 55,602.54 = 22,387.20 : x
  2. Step 2: Convert to fraction form
    40,290.78/55,602.54 = 22,387.20/x
  3. Step 3: Cross multiply
    40,290.78x = 55,602.54 × 22,387.20
  4. Step 4: Simplify right side
    40,290.78x = 1,244,785,183.49
  5. Step 5: Solve for x
    x = 1,244,785,183.49/40,290.78
  6. Step 6: Final answer
    x = 30,895.04

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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.