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Finding the Fourth Proportional to 67,661.70, 101,492.55 and 66,495.30

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Solution

The fourth proportional to 67,661.70, 101,492.55 and 66,495.30 is: 99,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,661.70 : 101,492.55 = 66,495.30 : x
  2. Step 2: Convert to fraction form
    67,661.70/101,492.55 = 66,495.30/x
  3. Step 3: Cross multiply
    67,661.70x = 101,492.55 × 66,495.30
  4. Step 4: Simplify right side
    67,661.70x = 6,748,777,560.02
  5. Step 5: Solve for x
    x = 6,748,777,560.02/67,661.70
  6. Step 6: Final answer
    x = 99,742.95

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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.