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Finding the Fourth Proportional to 78,844.91, 108,806.36 and 43,035.75

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Solution

The fourth proportional to 78,844.91, 108,806.36 and 43,035.75 is: 59,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,844.91 : 108,806.36 = 43,035.75 : x
  2. Step 2: Convert to fraction form
    78,844.91/108,806.36 = 43,035.75/x
  3. Step 3: Cross multiply
    78,844.91x = 108,806.36 × 43,035.75
  4. Step 4: Simplify right side
    78,844.91x = 4,682,563,092.19
  5. Step 5: Solve for x
    x = 4,682,563,092.19/78,844.91
  6. Step 6: Final answer
    x = 59,389.55

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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.