Home / 76,787.16-115,133.22-29,985

Finding the Fourth Proportional to 76,787.16, 115,133.22 and 29,985

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Solution

The fourth proportional to 76,787.16, 115,133.22 and 29,985 is: 44,958.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,787.16 : 115,133.22 = 29,985 : x
  2. Step 2: Convert to fraction form
    76,787.16/115,133.22 = 29,985/x
  3. Step 3: Cross multiply
    76,787.16x = 115,133.22 × 29,985
  4. Step 4: Simplify right side
    76,787.16x = 3,452,269,601.70
  5. Step 5: Solve for x
    x = 3,452,269,601.70/76,787.16
  6. Step 6: Final answer
    x = 44,958.94

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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.