Home / 83,881.29-115,718.03-49,870.49

Finding the Fourth Proportional to 83,881.29, 115,718.03 and 49,870.49

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Solution

The fourth proportional to 83,881.29, 115,718.03 and 49,870.49 is: 68,798.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,881.29 : 115,718.03 = 49,870.49 : x
  2. Step 2: Convert to fraction form
    83,881.29/115,718.03 = 49,870.49/x
  3. Step 3: Cross multiply
    83,881.29x = 115,718.03 × 49,870.49
  4. Step 4: Simplify right side
    83,881.29x = 5,770,914,029.99
  5. Step 5: Solve for x
    x = 5,770,914,029.99/83,881.29
  6. Step 6: Final answer
    x = 68,798.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.