Home / 76,388.16-114,579.84-20,983.68

Finding the Fourth Proportional to 76,388.16, 114,579.84 and 20,983.68

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Solution

The fourth proportional to 76,388.16, 114,579.84 and 20,983.68 is: 31,474.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,388.16 : 114,579.84 = 20,983.68 : x
  2. Step 2: Convert to fraction form
    76,388.16/114,579.84 = 20,983.68/x
  3. Step 3: Cross multiply
    76,388.16x = 114,579.84 × 20,983.68
  4. Step 4: Simplify right side
    76,388.16x = 2,404,306,697.01
  5. Step 5: Solve for x
    x = 2,404,306,697.01/76,388.16
  6. Step 6: Final answer
    x = 31,474.86

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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.