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Finding the Fourth Proportional to 112,408, 168,621.72 and 29,302

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Solution

The fourth proportional to 112,408, 168,621.72 and 29,302 is: 43,955.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,408 : 168,621.72 = 29,302 : x
  2. Step 2: Convert to fraction form
    112,408/168,621.72 = 29,302/x
  3. Step 3: Cross multiply
    112,408x = 168,621.72 × 29,302
  4. Step 4: Simplify right side
    112,408x = 4,940,953,639.44
  5. Step 5: Solve for x
    x = 4,940,953,639.44/112,408
  6. Step 6: Final answer
    x = 43,955.53

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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.