Home / 78,917.29-118,375.92-28,975.77

Finding the Fourth Proportional to 78,917.29, 118,375.92 and 28,975.77

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Solution

The fourth proportional to 78,917.29, 118,375.92 and 28,975.77 is: 43,463.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,917.29 : 118,375.92 = 28,975.77 : x
  2. Step 2: Convert to fraction form
    78,917.29/118,375.92 = 28,975.77/x
  3. Step 3: Cross multiply
    78,917.29x = 118,375.92 × 28,975.77
  4. Step 4: Simplify right side
    78,917.29x = 3,430,033,431.46
  5. Step 5: Solve for x
    x = 3,430,033,431.46/78,917.29
  6. Step 6: Final answer
    x = 43,463.65

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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.