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Finding the Fourth Proportional to 75,443.44, 103,307.12 and 72,469.12

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Solution

The fourth proportional to 75,443.44, 103,307.12 and 72,469.12 is: 99,234.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,443.44 : 103,307.12 = 72,469.12 : x
  2. Step 2: Convert to fraction form
    75,443.44/103,307.12 = 72,469.12/x
  3. Step 3: Cross multiply
    75,443.44x = 103,307.12 × 72,469.12
  4. Step 4: Simplify right side
    75,443.44x = 7,486,576,076.13
  5. Step 5: Solve for x
    x = 7,486,576,076.13/75,443.44
  6. Step 6: Final answer
    x = 99,234.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.