Home / 81,881.28-112,998.24-50,067.72

Finding the Fourth Proportional to 81,881.28, 112,998.24 and 50,067.72

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Solution

The fourth proportional to 81,881.28, 112,998.24 and 50,067.72 is: 69,094.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,881.28 : 112,998.24 = 50,067.72 : x
  2. Step 2: Convert to fraction form
    81,881.28/112,998.24 = 50,067.72/x
  3. Step 3: Cross multiply
    81,881.28x = 112,998.24 × 50,067.72
  4. Step 4: Simplify right side
    81,881.28x = 5,657,564,240.81
  5. Step 5: Solve for x
    x = 5,657,564,240.81/81,881.28
  6. Step 6: Final answer
    x = 69,094.72

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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.