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Finding the Fourth Proportional to 67,496.40, 101,244.60 and 20,743.20

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Solution

The fourth proportional to 67,496.40, 101,244.60 and 20,743.20 is: 31,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,496.40 : 101,244.60 = 20,743.20 : x
  2. Step 2: Convert to fraction form
    67,496.40/101,244.60 = 20,743.20/x
  3. Step 3: Cross multiply
    67,496.40x = 101,244.60 × 20,743.20
  4. Step 4: Simplify right side
    67,496.40x = 2,100,136,986.72
  5. Step 5: Solve for x
    x = 2,100,136,986.72/67,496.40
  6. Step 6: Final answer
    x = 31,114.80

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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.