Home / 57,013.68-78,672.78-33,135.36

Finding the Fourth Proportional to 57,013.68, 78,672.78 and 33,135.36

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Solution

The fourth proportional to 57,013.68, 78,672.78 and 33,135.36 is: 45,723.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,013.68 : 78,672.78 = 33,135.36 : x
  2. Step 2: Convert to fraction form
    57,013.68/78,672.78 = 33,135.36/x
  3. Step 3: Cross multiply
    57,013.68x = 78,672.78 × 33,135.36
  4. Step 4: Simplify right side
    57,013.68x = 2,606,850,887.50
  5. Step 5: Solve for x
    x = 2,606,850,887.50/57,013.68
  6. Step 6: Final answer
    x = 45,723.25

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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.