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Finding the Fourth Proportional to 80,999.84, 111,707.10 and 50,788.46

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Solution

The fourth proportional to 80,999.84, 111,707.10 and 50,788.46 is: 70,042.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,999.84 : 111,707.10 = 50,788.46 : x
  2. Step 2: Convert to fraction form
    80,999.84/111,707.10 = 50,788.46/x
  3. Step 3: Cross multiply
    80,999.84x = 111,707.10 × 50,788.46
  4. Step 4: Simplify right side
    80,999.84x = 5,673,431,580.07
  5. Step 5: Solve for x
    x = 5,673,431,580.07/80,999.84
  6. Step 6: Final answer
    x = 70,042.50

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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.