Home / 81,023.92-121,452.48-31,090.72

Finding the Fourth Proportional to 81,023.92, 121,452.48 and 31,090.72

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Solution

The fourth proportional to 81,023.92, 121,452.48 and 31,090.72 is: 46,604.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,023.92 : 121,452.48 = 31,090.72 : x
  2. Step 2: Convert to fraction form
    81,023.92/121,452.48 = 31,090.72/x
  3. Step 3: Cross multiply
    81,023.92x = 121,452.48 × 31,090.72
  4. Step 4: Simplify right side
    81,023.92x = 3,776,045,048.99
  5. Step 5: Solve for x
    x = 3,776,045,048.99/81,023.92
  6. Step 6: Final answer
    x = 46,604.08

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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.