Home / 67,664.88-101,502.18-20,911.68

Finding the Fourth Proportional to 67,664.88, 101,502.18 and 20,911.68

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Solution

The fourth proportional to 67,664.88, 101,502.18 and 20,911.68 is: 31,369.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,664.88 : 101,502.18 = 20,911.68 : x
  2. Step 2: Convert to fraction form
    67,664.88/101,502.18 = 20,911.68/x
  3. Step 3: Cross multiply
    67,664.88x = 101,502.18 × 20,911.68
  4. Step 4: Simplify right side
    67,664.88x = 2,122,581,107.46
  5. Step 5: Solve for x
    x = 2,122,581,107.46/67,664.88
  6. Step 6: Final answer
    x = 31,369.02

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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.