Home / 83,138.30-124,634.55-49,871.60

Finding the Fourth Proportional to 83,138.30, 124,634.55 and 49,871.60

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Solution

The fourth proportional to 83,138.30, 124,634.55 and 49,871.60 is: 74,763.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,138.30 : 124,634.55 = 49,871.60 : x
  2. Step 2: Convert to fraction form
    83,138.30/124,634.55 = 49,871.60/x
  3. Step 3: Cross multiply
    83,138.30x = 124,634.55 × 49,871.60
  4. Step 4: Simplify right side
    83,138.30x = 6,215,724,423.78
  5. Step 5: Solve for x
    x = 6,215,724,423.78/83,138.30
  6. Step 6: Final answer
    x = 74,763.67

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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.