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Finding the Fourth Proportional to 78,839.80, 108,801.45 and 44,847.40

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Solution

The fourth proportional to 78,839.80, 108,801.45 and 44,847.40 is: 61,890.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,839.80 : 108,801.45 = 44,847.40 : x
  2. Step 2: Convert to fraction form
    78,839.80/108,801.45 = 44,847.40/x
  3. Step 3: Cross multiply
    78,839.80x = 108,801.45 × 44,847.40
  4. Step 4: Simplify right side
    78,839.80x = 4,879,462,148.73
  5. Step 5: Solve for x
    x = 4,879,462,148.73/78,839.80
  6. Step 6: Final answer
    x = 61,890.85

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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.