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Finding the Fourth Proportional to 74,819.70, 112,295.16 and 30,446.28

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Solution

The fourth proportional to 74,819.70, 112,295.16 and 30,446.28 is: 45,696.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,819.70 : 112,295.16 = 30,446.28 : x
  2. Step 2: Convert to fraction form
    74,819.70/112,295.16 = 30,446.28/x
  3. Step 3: Cross multiply
    74,819.70x = 112,295.16 × 30,446.28
  4. Step 4: Simplify right side
    74,819.70x = 3,418,969,884.00
  5. Step 5: Solve for x
    x = 3,418,969,884.00/74,819.70
  6. Step 6: Final answer
    x = 45,696.12

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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.