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Finding the Fourth Proportional to 112,891.11, 169,336.89 and 28,651.11

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Solution

The fourth proportional to 112,891.11, 169,336.89 and 28,651.11 is: 42,976.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,891.11 : 169,336.89 = 28,651.11 : x
  2. Step 2: Convert to fraction form
    112,891.11/169,336.89 = 28,651.11/x
  3. Step 3: Cross multiply
    112,891.11x = 169,336.89 × 28,651.11
  4. Step 4: Simplify right side
    112,891.11x = 4,851,689,862.45
  5. Step 5: Solve for x
    x = 4,851,689,862.45/112,891.11
  6. Step 6: Final answer
    x = 42,976.72

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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.