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Finding the Fourth Proportional to 45,672.80, 68,624.40 and 29,040.80

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Solution

The fourth proportional to 45,672.80, 68,624.40 and 29,040.80 is: 43,634.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,672.80 : 68,624.40 = 29,040.80 : x
  2. Step 2: Convert to fraction form
    45,672.80/68,624.40 = 29,040.80/x
  3. Step 3: Cross multiply
    45,672.80x = 68,624.40 × 29,040.80
  4. Step 4: Simplify right side
    45,672.80x = 1,992,907,475.52
  5. Step 5: Solve for x
    x = 1,992,907,475.52/45,672.80
  6. Step 6: Final answer
    x = 43,634.45

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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.