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Finding the Fourth Proportional to 64,620.18, 96,930.16 and 20,250.34

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Solution

The fourth proportional to 64,620.18, 96,930.16 and 20,250.34 is: 30,375.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,620.18 : 96,930.16 = 20,250.34 : x
  2. Step 2: Convert to fraction form
    64,620.18/96,930.16 = 20,250.34/x
  3. Step 3: Cross multiply
    64,620.18x = 96,930.16 × 20,250.34
  4. Step 4: Simplify right side
    64,620.18x = 1,962,868,696.25
  5. Step 5: Solve for x
    x = 1,962,868,696.25/64,620.18
  6. Step 6: Final answer
    x = 30,375.48

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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.