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Finding the Fourth Proportional to 45,774.40, 68,546.40 and 30,107.20

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Solution

The fourth proportional to 45,774.40, 68,546.40 and 30,107.20 is: 45,085.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,774.40 : 68,546.40 = 30,107.20 : x
  2. Step 2: Convert to fraction form
    45,774.40/68,546.40 = 30,107.20/x
  3. Step 3: Cross multiply
    45,774.40x = 68,546.40 × 30,107.20
  4. Step 4: Simplify right side
    45,774.40x = 2,063,740,174.08
  5. Step 5: Solve for x
    x = 2,063,740,174.08/45,774.40
  6. Step 6: Final answer
    x = 45,085.03

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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.