Home / 70,748.38-106,086.05-20,821.99

Finding the Fourth Proportional to 70,748.38, 106,086.05 and 20,821.99

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Solution

The fourth proportional to 70,748.38, 106,086.05 and 20,821.99 is: 31,222.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,748.38 : 106,086.05 = 20,821.99 : x
  2. Step 2: Convert to fraction form
    70,748.38/106,086.05 = 20,821.99/x
  3. Step 3: Cross multiply
    70,748.38x = 106,086.05 × 20,821.99
  4. Step 4: Simplify right side
    70,748.38x = 2,208,922,568.13
  5. Step 5: Solve for x
    x = 2,208,922,568.13/70,748.38
  6. Step 6: Final answer
    x = 31,222.24

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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.