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Finding the Fourth Proportional to 112,949.30, 169,423.95 and 28,709.30

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Solution

The fourth proportional to 112,949.30, 169,423.95 and 28,709.30 is: 43,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,949.30 : 169,423.95 = 28,709.30 : x
  2. Step 2: Convert to fraction form
    112,949.30/169,423.95 = 28,709.30/x
  3. Step 3: Cross multiply
    112,949.30x = 169,423.95 × 28,709.30
  4. Step 4: Simplify right side
    112,949.30x = 4,864,043,007.74
  5. Step 5: Solve for x
    x = 4,864,043,007.74/112,949.30
  6. Step 6: Final answer
    x = 43,063.95

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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.