Home / 39,681.37-54,761.49-21,777.55

Finding the Fourth Proportional to 39,681.37, 54,761.49 and 21,777.55

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Solution

The fourth proportional to 39,681.37, 54,761.49 and 21,777.55 is: 30,053.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,681.37 : 54,761.49 = 21,777.55 : x
  2. Step 2: Convert to fraction form
    39,681.37/54,761.49 = 21,777.55/x
  3. Step 3: Cross multiply
    39,681.37x = 54,761.49 × 21,777.55
  4. Step 4: Simplify right side
    39,681.37x = 1,192,571,086.55
  5. Step 5: Solve for x
    x = 1,192,571,086.55/39,681.37
  6. Step 6: Final answer
    x = 30,053.68

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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.