Home / 78,768.05-118,169.70-28,847.15

Finding the Fourth Proportional to 78,768.05, 118,169.70 and 28,847.15

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Solution

The fourth proportional to 78,768.05, 118,169.70 and 28,847.15 is: 43,277.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,768.05 : 118,169.70 = 28,847.15 : x
  2. Step 2: Convert to fraction form
    78,768.05/118,169.70 = 28,847.15/x
  3. Step 3: Cross multiply
    78,768.05x = 118,169.70 × 28,847.15
  4. Step 4: Simplify right side
    78,768.05x = 3,408,859,061.36
  5. Step 5: Solve for x
    x = 3,408,859,061.36/78,768.05
  6. Step 6: Final answer
    x = 43,277.18

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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.