Home / 83,981.46-125,993.85-31,391.34

Finding the Fourth Proportional to 83,981.46, 125,993.85 and 31,391.34

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Solution

The fourth proportional to 83,981.46, 125,993.85 and 31,391.34 is: 47,095.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,981.46 : 125,993.85 = 31,391.34 : x
  2. Step 2: Convert to fraction form
    83,981.46/125,993.85 = 31,391.34/x
  3. Step 3: Cross multiply
    83,981.46x = 125,993.85 × 31,391.34
  4. Step 4: Simplify right side
    83,981.46x = 3,955,115,783.26
  5. Step 5: Solve for x
    x = 3,955,115,783.26/83,981.46
  6. Step 6: Final answer
    x = 47,095.11

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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.