Home / 83,218.79-124,815.87-30,615.97

Finding the Fourth Proportional to 83,218.79, 124,815.87 and 30,615.97

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Solution

The fourth proportional to 83,218.79, 124,815.87 and 30,615.97 is: 45,919.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,218.79 : 124,815.87 = 30,615.97 : x
  2. Step 2: Convert to fraction form
    83,218.79/124,815.87 = 30,615.97/x
  3. Step 3: Cross multiply
    83,218.79x = 124,815.87 × 30,615.97
  4. Step 4: Simplify right side
    83,218.79x = 3,821,358,931.44
  5. Step 5: Solve for x
    x = 3,821,358,931.44/83,218.79
  6. Step 6: Final answer
    x = 45,919.42

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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.