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Finding the Fourth Proportional to 66,979.44, 100,483.85 and 19,598.54

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Solution

The fourth proportional to 66,979.44, 100,483.85 and 19,598.54 is: 29,402.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,979.44 : 100,483.85 = 19,598.54 : x
  2. Step 2: Convert to fraction form
    66,979.44/100,483.85 = 19,598.54/x
  3. Step 3: Cross multiply
    66,979.44x = 100,483.85 × 19,598.54
  4. Step 4: Simplify right side
    66,979.44x = 1,969,336,753.58
  5. Step 5: Solve for x
    x = 1,969,336,753.58/66,979.44
  6. Step 6: Final answer
    x = 29,402.11

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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.