Home / 42,760.75-64,154.97-20,571.25

Finding the Fourth Proportional to 42,760.75, 64,154.97 and 20,571.25

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Solution

The fourth proportional to 42,760.75, 64,154.97 and 20,571.25 is: 30,863.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,760.75 : 64,154.97 = 20,571.25 : x
  2. Step 2: Convert to fraction form
    42,760.75/64,154.97 = 20,571.25/x
  3. Step 3: Cross multiply
    42,760.75x = 64,154.97 × 20,571.25
  4. Step 4: Simplify right side
    42,760.75x = 1,319,747,926.61
  5. Step 5: Solve for x
    x = 1,319,747,926.61/42,760.75
  6. Step 6: Final answer
    x = 30,863.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.