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Finding the Fourth Proportional to 84,346.80, 126,478.44 and 44,893.20

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Solution

The fourth proportional to 84,346.80, 126,478.44 and 44,893.20 is: 67,317.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,346.80 : 126,478.44 = 44,893.20 : x
  2. Step 2: Convert to fraction form
    84,346.80/126,478.44 = 44,893.20/x
  3. Step 3: Cross multiply
    84,346.80x = 126,478.44 × 44,893.20
  4. Step 4: Simplify right side
    84,346.80x = 5,678,021,902.61
  5. Step 5: Solve for x
    x = 5,678,021,902.61/84,346.80
  6. Step 6: Final answer
    x = 67,317.57

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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.