Home / 81,181.92-121,776.48-31,244.16

Finding the Fourth Proportional to 81,181.92, 121,776.48 and 31,244.16

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Solution

The fourth proportional to 81,181.92, 121,776.48 and 31,244.16 is: 46,867.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,181.92 : 121,776.48 = 31,244.16 : x
  2. Step 2: Convert to fraction form
    81,181.92/121,776.48 = 31,244.16/x
  3. Step 3: Cross multiply
    81,181.92x = 121,776.48 × 31,244.16
  4. Step 4: Simplify right side
    81,181.92x = 3,804,803,825.36
  5. Step 5: Solve for x
    x = 3,804,803,825.36/81,181.92
  6. Step 6: Final answer
    x = 46,867.63

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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.