Home / 83,775.45-115,599.82-49,784.61

Finding the Fourth Proportional to 83,775.45, 115,599.82 and 49,784.61

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Solution

The fourth proportional to 83,775.45, 115,599.82 and 49,784.61 is: 68,696.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,775.45 : 115,599.82 = 49,784.61 : x
  2. Step 2: Convert to fraction form
    83,775.45/115,599.82 = 49,784.61/x
  3. Step 3: Cross multiply
    83,775.45x = 115,599.82 × 49,784.61
  4. Step 4: Simplify right side
    83,775.45x = 5,755,091,954.77
  5. Step 5: Solve for x
    x = 5,755,091,954.77/83,775.45
  6. Step 6: Final answer
    x = 68,696.64

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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.