Home / 79,201.20-118,764.60-45,930.72

Finding the Fourth Proportional to 79,201.20, 118,764.60 and 45,930.72

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Solution

The fourth proportional to 79,201.20, 118,764.60 and 45,930.72 is: 68,874.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,201.20 : 118,764.60 = 45,930.72 : x
  2. Step 2: Convert to fraction form
    79,201.20/118,764.60 = 45,930.72/x
  3. Step 3: Cross multiply
    79,201.20x = 118,764.60 × 45,930.72
  4. Step 4: Simplify right side
    79,201.20x = 5,454,943,588.51
  5. Step 5: Solve for x
    x = 5,454,943,588.51/79,201.20
  6. Step 6: Final answer
    x = 68,874.51

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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.