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Finding the Fourth Proportional to 84,283.86, 126,351.54 and 34,405.86

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Solution

The fourth proportional to 84,283.86, 126,351.54 and 34,405.86 is: 51,578.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,283.86 : 126,351.54 = 34,405.86 : x
  2. Step 2: Convert to fraction form
    84,283.86/126,351.54 = 34,405.86/x
  3. Step 3: Cross multiply
    84,283.86x = 126,351.54 × 34,405.86
  4. Step 4: Simplify right side
    84,283.86x = 4,347,233,396.02
  5. Step 5: Solve for x
    x = 4,347,233,396.02/84,283.86
  6. Step 6: Final answer
    x = 51,578.48

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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.