Home / 76,837.70-115,242.51-20,664.66

Finding the Fourth Proportional to 76,837.70, 115,242.51 and 20,664.66

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Solution

The fourth proportional to 76,837.70, 115,242.51 and 20,664.66 is: 30,993.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,837.70 : 115,242.51 = 20,664.66 : x
  2. Step 2: Convert to fraction form
    76,837.70/115,242.51 = 20,664.66/x
  3. Step 3: Cross multiply
    76,837.70x = 115,242.51 × 20,664.66
  4. Step 4: Simplify right side
    76,837.70x = 2,381,447,286.70
  5. Step 5: Solve for x
    x = 2,381,447,286.70/76,837.70
  6. Step 6: Final answer
    x = 30,993.21

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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.