Home / 82,680.39-124,020.57-20,350.89

Finding the Fourth Proportional to 82,680.39, 124,020.57 and 20,350.89

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Solution

The fourth proportional to 82,680.39, 124,020.57 and 20,350.89 is: 30,526.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,680.39 : 124,020.57 = 20,350.89 : x
  2. Step 2: Convert to fraction form
    82,680.39/124,020.57 = 20,350.89/x
  3. Step 3: Cross multiply
    82,680.39x = 124,020.57 × 20,350.89
  4. Step 4: Simplify right side
    82,680.39x = 2,523,928,977.81
  5. Step 5: Solve for x
    x = 2,523,928,977.81/82,680.39
  6. Step 6: Final answer
    x = 30,526.33

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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.