Home / 77,989.15-116,982.68-18,824.29

Finding the Fourth Proportional to 77,989.15, 116,982.68 and 18,824.29

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Solution

The fourth proportional to 77,989.15, 116,982.68 and 18,824.29 is: 28,236.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,989.15 : 116,982.68 = 18,824.29 : x
  2. Step 2: Convert to fraction form
    77,989.15/116,982.68 = 18,824.29/x
  3. Step 3: Cross multiply
    77,989.15x = 116,982.68 × 18,824.29
  4. Step 4: Simplify right side
    77,989.15x = 2,202,115,799.18
  5. Step 5: Solve for x
    x = 2,202,115,799.18/77,989.15
  6. Step 6: Final answer
    x = 28,236.18

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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.