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Finding the Fourth Proportional to 67,459.40, 101,189.10 and 66,422.60

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Solution

The fourth proportional to 67,459.40, 101,189.10 and 66,422.60 is: 99,633.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,459.40 : 101,189.10 = 66,422.60 : x
  2. Step 2: Convert to fraction form
    67,459.40/101,189.10 = 66,422.60/x
  3. Step 3: Cross multiply
    67,459.40x = 101,189.10 × 66,422.60
  4. Step 4: Simplify right side
    67,459.40x = 6,721,243,113.66
  5. Step 5: Solve for x
    x = 6,721,243,113.66/67,459.40
  6. Step 6: Final answer
    x = 99,633.90

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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.