Home / 78,787.19-118,180.79-28,847.04

Finding the Fourth Proportional to 78,787.19, 118,180.79 and 28,847.04

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Solution

The fourth proportional to 78,787.19, 118,180.79 and 28,847.04 is: 43,270.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,787.19 : 118,180.79 = 28,847.04 : x
  2. Step 2: Convert to fraction form
    78,787.19/118,180.79 = 28,847.04/x
  3. Step 3: Cross multiply
    78,787.19x = 118,180.79 × 28,847.04
  4. Step 4: Simplify right side
    78,787.19x = 3,409,165,832.13
  5. Step 5: Solve for x
    x = 3,409,165,832.13/78,787.19
  6. Step 6: Final answer
    x = 43,270.56

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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.