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Finding the Fourth Proportional to 66,164.30, 99,246.45 and 36,639.80

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Solution

The fourth proportional to 66,164.30, 99,246.45 and 36,639.80 is: 54,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,164.30 : 99,246.45 = 36,639.80 : x
  2. Step 2: Convert to fraction form
    66,164.30/99,246.45 = 36,639.80/x
  3. Step 3: Cross multiply
    66,164.30x = 99,246.45 × 36,639.80
  4. Step 4: Simplify right side
    66,164.30x = 3,636,370,078.71
  5. Step 5: Solve for x
    x = 3,636,370,078.71/66,164.30
  6. Step 6: Final answer
    x = 54,959.70

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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.