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Finding the Fourth Proportional to 66,984.60, 100,304.10 and 53,160.60

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Solution

The fourth proportional to 66,984.60, 100,304.10 and 53,160.60 is: 79,603.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,984.60 : 100,304.10 = 53,160.60 : x
  2. Step 2: Convert to fraction form
    66,984.60/100,304.10 = 53,160.60/x
  3. Step 3: Cross multiply
    66,984.60x = 100,304.10 × 53,160.60
  4. Step 4: Simplify right side
    66,984.60x = 5,332,226,138.46
  5. Step 5: Solve for x
    x = 5,332,226,138.46/66,984.60
  6. Step 6: Final answer
    x = 79,603.76

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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.