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Finding the Fourth Proportional to 83,998.45, 115,893.07 and 49,979.67

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Solution

The fourth proportional to 83,998.45, 115,893.07 and 49,979.67 is: 68,957.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,998.45 : 115,893.07 = 49,979.67 : x
  2. Step 2: Convert to fraction form
    83,998.45/115,893.07 = 49,979.67/x
  3. Step 3: Cross multiply
    83,998.45x = 115,893.07 × 49,979.67
  4. Step 4: Simplify right side
    83,998.45x = 5,792,297,393.89
  5. Step 5: Solve for x
    x = 5,792,297,393.89/83,998.45
  6. Step 6: Final answer
    x = 68,957.19

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1.5x scale

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.