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Finding the Fourth Proportional to 67,662.20, 101,493.30 and 66,495.80

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Solution

The fourth proportional to 67,662.20, 101,493.30 and 66,495.80 is: 99,743.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,662.20 : 101,493.30 = 66,495.80 : x
  2. Step 2: Convert to fraction form
    67,662.20/101,493.30 = 66,495.80/x
  3. Step 3: Cross multiply
    67,662.20x = 101,493.30 × 66,495.80
  4. Step 4: Simplify right side
    67,662.20x = 6,748,878,178.14
  5. Step 5: Solve for x
    x = 6,748,878,178.14/67,662.20
  6. Step 6: Final answer
    x = 99,743.70

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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.