Home / 81,699.24-112,742.04-49,921.32

Finding the Fourth Proportional to 81,699.24, 112,742.04 and 49,921.32

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Solution

The fourth proportional to 81,699.24, 112,742.04 and 49,921.32 is: 68,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,699.24 : 112,742.04 = 49,921.32 : x
  2. Step 2: Convert to fraction form
    81,699.24/112,742.04 = 49,921.32/x
  3. Step 3: Cross multiply
    81,699.24x = 112,742.04 × 49,921.32
  4. Step 4: Simplify right side
    81,699.24x = 5,628,231,456.29
  5. Step 5: Solve for x
    x = 5,628,231,456.29/81,699.24
  6. Step 6: Final answer
    x = 68,889.64

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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.