Home / 81,272.21-112,178.19-47,287.27

Finding the Fourth Proportional to 81,272.21, 112,178.19 and 47,287.27

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Solution

The fourth proportional to 81,272.21, 112,178.19 and 47,287.27 is: 65,269.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,272.21 : 112,178.19 = 47,287.27 : x
  2. Step 2: Convert to fraction form
    81,272.21/112,178.19 = 47,287.27/x
  3. Step 3: Cross multiply
    81,272.21x = 112,178.19 × 47,287.27
  4. Step 4: Simplify right side
    81,272.21x = 5,304,599,797.75
  5. Step 5: Solve for x
    x = 5,304,599,797.75/81,272.21
  6. Step 6: Final answer
    x = 65,269.54

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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.