Home / 57,556.05-86,338.34-20,111.78

Finding the Fourth Proportional to 57,556.05, 86,338.34 and 20,111.78

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Solution

The fourth proportional to 57,556.05, 86,338.34 and 20,111.78 is: 30,169.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,556.05 : 86,338.34 = 20,111.78 : x
  2. Step 2: Convert to fraction form
    57,556.05/86,338.34 = 20,111.78/x
  3. Step 3: Cross multiply
    57,556.05x = 86,338.34 × 20,111.78
  4. Step 4: Simplify right side
    57,556.05x = 1,736,417,167.39
  5. Step 5: Solve for x
    x = 1,736,417,167.39/57,556.05
  6. Step 6: Final answer
    x = 30,169.15

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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.