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Finding the Fourth Proportional to 78,843.48, 118,424.39 and 47,313.42

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Solution

The fourth proportional to 78,843.48, 118,424.39 and 47,313.42 is: 71,065.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,843.48 : 118,424.39 = 47,313.42 : x
  2. Step 2: Convert to fraction form
    78,843.48/118,424.39 = 47,313.42/x
  3. Step 3: Cross multiply
    78,843.48x = 118,424.39 × 47,313.42
  4. Step 4: Simplify right side
    78,843.48x = 5,603,062,902.31
  5. Step 5: Solve for x
    x = 5,603,062,902.31/78,843.48
  6. Step 6: Final answer
    x = 71,065.65

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1.5x scale

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.