Home / 81,751.24-112,817.12-47,761.68

Finding the Fourth Proportional to 81,751.24, 112,817.12 and 47,761.68

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Solution

The fourth proportional to 81,751.24, 112,817.12 and 47,761.68 is: 65,911.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,751.24 : 112,817.12 = 47,761.68 : x
  2. Step 2: Convert to fraction form
    81,751.24/112,817.12 = 47,761.68/x
  3. Step 3: Cross multiply
    81,751.24x = 112,817.12 × 47,761.68
  4. Step 4: Simplify right side
    81,751.24x = 5,388,335,183.96
  5. Step 5: Solve for x
    x = 5,388,335,183.96/81,751.24
  6. Step 6: Final answer
    x = 65,911.36

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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.