Home / 78,454.62-108,283.04-49,808.40

Finding the Fourth Proportional to 78,454.62, 108,283.04 and 49,808.40

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Solution

The fourth proportional to 78,454.62, 108,283.04 and 49,808.40 is: 68,745.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,454.62 : 108,283.04 = 49,808.40 : x
  2. Step 2: Convert to fraction form
    78,454.62/108,283.04 = 49,808.40/x
  3. Step 3: Cross multiply
    78,454.62x = 108,283.04 × 49,808.40
  4. Step 4: Simplify right side
    78,454.62x = 5,393,404,720.49
  5. Step 5: Solve for x
    x = 5,393,404,720.49/78,454.62
  6. Step 6: Final answer
    x = 68,745.53

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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.