Home / 78,780.33-118,115.13-28,853.94

Finding the Fourth Proportional to 78,780.33, 118,115.13 and 28,853.94

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Solution

The fourth proportional to 78,780.33, 118,115.13 and 28,853.94 is: 43,260.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,780.33 : 118,115.13 = 28,853.94 : x
  2. Step 2: Convert to fraction form
    78,780.33/118,115.13 = 28,853.94/x
  3. Step 3: Cross multiply
    78,780.33x = 118,115.13 × 28,853.94
  4. Step 4: Simplify right side
    78,780.33x = 3,408,086,874.11
  5. Step 5: Solve for x
    x = 3,408,086,874.11/78,780.33
  6. Step 6: Final answer
    x = 43,260.63

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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.