Home / 57,090.05-78,772.47-39,178.52

Finding the Fourth Proportional to 57,090.05, 78,772.47 and 39,178.52

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Solution

The fourth proportional to 57,090.05, 78,772.47 and 39,178.52 is: 54,058.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,090.05 : 78,772.47 = 39,178.52 : x
  2. Step 2: Convert to fraction form
    57,090.05/78,772.47 = 39,178.52/x
  3. Step 3: Cross multiply
    57,090.05x = 78,772.47 × 39,178.52
  4. Step 4: Simplify right side
    57,090.05x = 3,086,188,791.34
  5. Step 5: Solve for x
    x = 3,086,188,791.34/57,090.05
  6. Step 6: Final answer
    x = 54,058.26

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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.