Home / 57,528.69-79,321.66-39,388.21

Finding the Fourth Proportional to 57,528.69, 79,321.66 and 39,388.21

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Solution

The fourth proportional to 57,528.69, 79,321.66 and 39,388.21 is: 54,309.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,528.69 : 79,321.66 = 39,388.21 : x
  2. Step 2: Convert to fraction form
    57,528.69/79,321.66 = 39,388.21/x
  3. Step 3: Cross multiply
    57,528.69x = 79,321.66 × 39,388.21
  4. Step 4: Simplify right side
    57,528.69x = 3,124,337,608.08
  5. Step 5: Solve for x
    x = 3,124,337,608.08/57,528.69
  6. Step 6: Final answer
    x = 54,309.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.