Home / 55,123.20-82,717.20-20,066.40

Finding the Fourth Proportional to 55,123.20, 82,717.20 and 20,066.40

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Solution

The fourth proportional to 55,123.20, 82,717.20 and 20,066.40 is: 30,111.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,123.20 : 82,717.20 = 20,066.40 : x
  2. Step 2: Convert to fraction form
    55,123.20/82,717.20 = 20,066.40/x
  3. Step 3: Cross multiply
    55,123.20x = 82,717.20 × 20,066.40
  4. Step 4: Simplify right side
    55,123.20x = 1,659,836,422.08
  5. Step 5: Solve for x
    x = 1,659,836,422.08/55,123.20
  6. Step 6: Final answer
    x = 30,111.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.