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Finding the Fourth Proportional to 78,850.56, 108,815.25 and 43,041.85

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Solution

The fourth proportional to 78,850.56, 108,815.25 and 43,041.85 is: 59,398.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,850.56 : 108,815.25 = 43,041.85 : x
  2. Step 2: Convert to fraction form
    78,850.56/108,815.25 = 43,041.85/x
  3. Step 3: Cross multiply
    78,850.56x = 108,815.25 × 43,041.85
  4. Step 4: Simplify right side
    78,850.56x = 4,683,609,668.21
  5. Step 5: Solve for x
    x = 4,683,609,668.21/78,850.56
  6. Step 6: Final answer
    x = 59,398.56

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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.