Home / 82,979.19-124,429.86-30,351.87

Finding the Fourth Proportional to 82,979.19, 124,429.86 and 30,351.87

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Solution

The fourth proportional to 82,979.19, 124,429.86 and 30,351.87 is: 45,513.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,979.19 : 124,429.86 = 30,351.87 : x
  2. Step 2: Convert to fraction form
    82,979.19/124,429.86 = 30,351.87/x
  3. Step 3: Cross multiply
    82,979.19x = 124,429.86 × 30,351.87
  4. Step 4: Simplify right side
    82,979.19x = 3,776,678,934.84
  5. Step 5: Solve for x
    x = 3,776,678,934.84/82,979.19
  6. Step 6: Final answer
    x = 45,513.57

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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.