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Finding the Fourth Proportional to 71,998.74, 108,000.54 and 19,408.68

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Solution

The fourth proportional to 71,998.74, 108,000.54 and 19,408.68 is: 29,113.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,998.74 : 108,000.54 = 19,408.68 : x
  2. Step 2: Convert to fraction form
    71,998.74/108,000.54 = 19,408.68/x
  3. Step 3: Cross multiply
    71,998.74x = 108,000.54 × 19,408.68
  4. Step 4: Simplify right side
    71,998.74x = 2,096,147,920.69
  5. Step 5: Solve for x
    x = 2,096,147,920.69/71,998.74
  6. Step 6: Final answer
    x = 29,113.68

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1.5x scale

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.