Home / 57,085.05-78,765.57-39,173.52

Finding the Fourth Proportional to 57,085.05, 78,765.57 and 39,173.52

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Solution

The fourth proportional to 57,085.05, 78,765.57 and 39,173.52 is: 54,051.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,085.05 : 78,765.57 = 39,173.52 : x
  2. Step 2: Convert to fraction form
    57,085.05/78,765.57 = 39,173.52/x
  3. Step 3: Cross multiply
    57,085.05x = 78,765.57 × 39,173.52
  4. Step 4: Simplify right side
    57,085.05x = 3,085,524,631.71
  5. Step 5: Solve for x
    x = 3,085,524,631.71/57,085.05
  6. Step 6: Final answer
    x = 54,051.36

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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.