Home / 67,868.24-101,808.84-21,108.56

Finding the Fourth Proportional to 67,868.24, 101,808.84 and 21,108.56

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Solution

The fourth proportional to 67,868.24, 101,808.84 and 21,108.56 is: 31,664.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,868.24 : 101,808.84 = 21,108.56 : x
  2. Step 2: Convert to fraction form
    67,868.24/101,808.84 = 21,108.56/x
  3. Step 3: Cross multiply
    67,868.24x = 101,808.84 × 21,108.56
  4. Step 4: Simplify right side
    67,868.24x = 2,149,038,007.67
  5. Step 5: Solve for x
    x = 2,149,038,007.67/67,868.24
  6. Step 6: Final answer
    x = 31,664.86

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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.