Home / 55,440.21-83,193.12-20,404.47

Finding the Fourth Proportional to 55,440.21, 83,193.12 and 20,404.47

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Solution

The fourth proportional to 55,440.21, 83,193.12 and 20,404.47 is: 30,618.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,440.21 : 83,193.12 = 20,404.47 : x
  2. Step 2: Convert to fraction form
    55,440.21/83,193.12 = 20,404.47/x
  3. Step 3: Cross multiply
    55,440.21x = 83,193.12 × 20,404.47
  4. Step 4: Simplify right side
    55,440.21x = 1,697,511,521.25
  5. Step 5: Solve for x
    x = 1,697,511,521.25/55,440.21
  6. Step 6: Final answer
    x = 30,618.78

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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.