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Finding the Fourth Proportional to 66,246.10, 91,414.90 and 36,030.80

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Solution

The fourth proportional to 66,246.10, 91,414.90 and 36,030.80 is: 49,719.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,246.10 : 91,414.90 = 36,030.80 : x
  2. Step 2: Convert to fraction form
    66,246.10/91,414.90 = 36,030.80/x
  3. Step 3: Cross multiply
    66,246.10x = 91,414.90 × 36,030.80
  4. Step 4: Simplify right side
    66,246.10x = 3,293,751,978.92
  5. Step 5: Solve for x
    x = 3,293,751,978.92/66,246.10
  6. Step 6: Final answer
    x = 49,719.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.