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Finding the Fourth Proportional to 66,927.80, 100,197.30 and 64,983.80

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Solution

The fourth proportional to 66,927.80, 100,197.30 and 64,983.80 is: 97,286.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,927.80 : 100,197.30 = 64,983.80 : x
  2. Step 2: Convert to fraction form
    66,927.80/100,197.30 = 64,983.80/x
  3. Step 3: Cross multiply
    66,927.80x = 100,197.30 × 64,983.80
  4. Step 4: Simplify right side
    66,927.80x = 6,511,201,303.74
  5. Step 5: Solve for x
    x = 6,511,201,303.74/66,927.80
  6. Step 6: Final answer
    x = 97,286.95

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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.