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Finding the Fourth Proportional to 78,244.80, 117,315.90 and 44,511.54

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Solution

The fourth proportional to 78,244.80, 117,315.90 and 44,511.54 is: 66,738.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,244.80 : 117,315.90 = 44,511.54 : x
  2. Step 2: Convert to fraction form
    78,244.80/117,315.90 = 44,511.54/x
  3. Step 3: Cross multiply
    78,244.80x = 117,315.90 × 44,511.54
  4. Step 4: Simplify right side
    78,244.80x = 5,221,911,375.49
  5. Step 5: Solve for x
    x = 5,221,911,375.49/78,244.80
  6. Step 6: Final answer
    x = 66,738.13

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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.