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Finding the Fourth Proportional to 72,929.71, 109,394.56 and 17,525.71

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Solution

The fourth proportional to 72,929.71, 109,394.56 and 17,525.71 is: 26,288.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,929.71 : 109,394.56 = 17,525.71 : x
  2. Step 2: Convert to fraction form
    72,929.71/109,394.56 = 17,525.71/x
  3. Step 3: Cross multiply
    72,929.71x = 109,394.56 × 17,525.71
  4. Step 4: Simplify right side
    72,929.71x = 1,917,217,334.14
  5. Step 5: Solve for x
    x = 1,917,217,334.14/72,929.71
  6. Step 6: Final answer
    x = 26,288.56

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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.