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Finding the Fourth Proportional to 83,143.10, 124,629.60 and 40,958.30

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Solution

The fourth proportional to 83,143.10, 124,629.60 and 40,958.30 is: 61,395.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,143.10 : 124,629.60 = 40,958.30 : x
  2. Step 2: Convert to fraction form
    83,143.10/124,629.60 = 40,958.30/x
  3. Step 3: Cross multiply
    83,143.10x = 124,629.60 × 40,958.30
  4. Step 4: Simplify right side
    83,143.10x = 5,104,616,545.68
  5. Step 5: Solve for x
    x = 5,104,616,545.68/83,143.10
  6. Step 6: Final answer
    x = 61,395.55

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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.