Home / 77,620.96-116,435.20-21,459.82

Finding the Fourth Proportional to 77,620.96, 116,435.20 and 21,459.82

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Solution

The fourth proportional to 77,620.96, 116,435.20 and 21,459.82 is: 32,190.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,620.96 : 116,435.20 = 21,459.82 : x
  2. Step 2: Convert to fraction form
    77,620.96/116,435.20 = 21,459.82/x
  3. Step 3: Cross multiply
    77,620.96x = 116,435.20 × 21,459.82
  4. Step 4: Simplify right side
    77,620.96x = 2,498,678,803.23
  5. Step 5: Solve for x
    x = 2,498,678,803.23/77,620.96
  6. Step 6: Final answer
    x = 32,190.78

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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.