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Finding the Fourth Proportional to 55,440.71, 83,193.87 and 20,404.97

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Solution

The fourth proportional to 55,440.71, 83,193.87 and 20,404.97 is: 30,619.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,440.71 : 83,193.87 = 20,404.97 : x
  2. Step 2: Convert to fraction form
    55,440.71/83,193.87 = 20,404.97/x
  3. Step 3: Cross multiply
    55,440.71x = 83,193.87 × 20,404.97
  4. Step 4: Simplify right side
    55,440.71x = 1,697,568,005.56
  5. Step 5: Solve for x
    x = 1,697,568,005.56/55,440.71
  6. Step 6: Final answer
    x = 30,619.52

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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.