Home / 83,981.55-125,971.54-34,049.78

Finding the Fourth Proportional to 83,981.55, 125,971.54 and 34,049.78

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Solution

The fourth proportional to 83,981.55, 125,971.54 and 34,049.78 is: 51,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,981.55 : 125,971.54 = 34,049.78 : x
  2. Step 2: Convert to fraction form
    83,981.55/125,971.54 = 34,049.78/x
  3. Step 3: Cross multiply
    83,981.55x = 125,971.54 × 34,049.78
  4. Step 4: Simplify right side
    83,981.55x = 4,289,303,223.26
  5. Step 5: Solve for x
    x = 4,289,303,223.26/83,981.55
  6. Step 6: Final answer
    x = 51,074.35

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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.