Home / 57,098.20-78,813.42-39,218.20

Finding the Fourth Proportional to 57,098.20, 78,813.42 and 39,218.20

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Solution

The fourth proportional to 57,098.20, 78,813.42 and 39,218.20 is: 54,133.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,098.20 : 78,813.42 = 39,218.20 : x
  2. Step 2: Convert to fraction form
    57,098.20/78,813.42 = 39,218.20/x
  3. Step 3: Cross multiply
    57,098.20x = 78,813.42 × 39,218.20
  4. Step 4: Simplify right side
    57,098.20x = 3,090,920,468.24
  5. Step 5: Solve for x
    x = 3,090,920,468.24/57,098.20
  6. Step 6: Final answer
    x = 54,133.41

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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.