Home / 47,723.06-65,836.23-30,721.21

Finding the Fourth Proportional to 47,723.06, 65,836.23 and 30,721.21

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Solution

The fourth proportional to 47,723.06, 65,836.23 and 30,721.21 is: 42,381.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,723.06 : 65,836.23 = 30,721.21 : x
  2. Step 2: Convert to fraction form
    47,723.06/65,836.23 = 30,721.21/x
  3. Step 3: Cross multiply
    47,723.06x = 65,836.23 × 30,721.21
  4. Step 4: Simplify right side
    47,723.06x = 2,022,568,647.44
  5. Step 5: Solve for x
    x = 2,022,568,647.44/47,723.06
  6. Step 6: Final answer
    x = 42,381.37

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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.