Home / 78,787.91-118,160.39-26,190.56

Finding the Fourth Proportional to 78,787.91, 118,160.39 and 26,190.56

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Solution

The fourth proportional to 78,787.91, 118,160.39 and 26,190.56 is: 39,278.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,787.91 : 118,160.39 = 26,190.56 : x
  2. Step 2: Convert to fraction form
    78,787.91/118,160.39 = 26,190.56/x
  3. Step 3: Cross multiply
    78,787.91x = 118,160.39 × 26,190.56
  4. Step 4: Simplify right side
    78,787.91x = 3,094,686,062.16
  5. Step 5: Solve for x
    x = 3,094,686,062.16/78,787.91
  6. Step 6: Final answer
    x = 39,278.69

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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.