Home / 77,405.10-116,107.76-21,245.96

Finding the Fourth Proportional to 77,405.10, 116,107.76 and 21,245.96

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Solution

The fourth proportional to 77,405.10, 116,107.76 and 21,245.96 is: 31,868.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,405.10 : 116,107.76 = 21,245.96 : x
  2. Step 2: Convert to fraction form
    77,405.10/116,107.76 = 21,245.96/x
  3. Step 3: Cross multiply
    77,405.10x = 116,107.76 × 21,245.96
  4. Step 4: Simplify right side
    77,405.10x = 2,466,820,824.65
  5. Step 5: Solve for x
    x = 2,466,820,824.65/77,405.10
  6. Step 6: Final answer
    x = 31,868.97

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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.