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Finding the Fourth Proportional to 88,143.71, 132,231.97 and 28,981.72

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Solution

The fourth proportional to 88,143.71, 132,231.97 and 28,981.72 is: 43,477.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,143.71 : 132,231.97 = 28,981.72 : x
  2. Step 2: Convert to fraction form
    88,143.71/132,231.97 = 28,981.72/x
  3. Step 3: Cross multiply
    88,143.71x = 132,231.97 × 28,981.72
  4. Step 4: Simplify right side
    88,143.71x = 3,832,309,268.43
  5. Step 5: Solve for x
    x = 3,832,309,268.43/88,143.71
  6. Step 6: Final answer
    x = 43,477.97

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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.