Home / 76,812.12-115,139-29,414.26

Finding the Fourth Proportional to 76,812.12, 115,139 and 29,414.26

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Solution

The fourth proportional to 76,812.12, 115,139 and 29,414.26 is: 44,091.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,812.12 : 115,139 = 29,414.26 : x
  2. Step 2: Convert to fraction form
    76,812.12/115,139 = 29,414.26/x
  3. Step 3: Cross multiply
    76,812.12x = 115,139 × 29,414.26
  4. Step 4: Simplify right side
    76,812.12x = 3,386,728,482.14
  5. Step 5: Solve for x
    x = 3,386,728,482.14/76,812.12
  6. Step 6: Final answer
    x = 44,091.07

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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.