Home / 82,681.39-124,022.07-20,351.89

Finding the Fourth Proportional to 82,681.39, 124,022.07 and 20,351.89

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Solution

The fourth proportional to 82,681.39, 124,022.07 and 20,351.89 is: 30,527.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,681.39 : 124,022.07 = 20,351.89 : x
  2. Step 2: Convert to fraction form
    82,681.39/124,022.07 = 20,351.89/x
  3. Step 3: Cross multiply
    82,681.39x = 124,022.07 × 20,351.89
  4. Step 4: Simplify right side
    82,681.39x = 2,524,083,526.21
  5. Step 5: Solve for x
    x = 2,524,083,526.21/82,681.39
  6. Step 6: Final answer
    x = 30,527.83

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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.