Home / 75,787.17-113,760-31,440.26

Finding the Fourth Proportional to 75,787.17, 113,760 and 31,440.26

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Solution

The fourth proportional to 75,787.17, 113,760 and 31,440.26 is: 47,193.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,787.17 : 113,760 = 31,440.26 : x
  2. Step 2: Convert to fraction form
    75,787.17/113,760 = 31,440.26/x
  3. Step 3: Cross multiply
    75,787.17x = 113,760 × 31,440.26
  4. Step 4: Simplify right side
    75,787.17x = 3,576,643,408.80
  5. Step 5: Solve for x
    x = 3,576,643,408.80/75,787.17
  6. Step 6: Final answer
    x = 47,193.26

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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.