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Finding the Fourth Proportional to 45,750.69, 68,619.11 and 12,473.46

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Solution

The fourth proportional to 45,750.69, 68,619.11 and 12,473.46 is: 18,708.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,750.69 : 68,619.11 = 12,473.46 : x
  2. Step 2: Convert to fraction form
    45,750.69/68,619.11 = 12,473.46/x
  3. Step 3: Cross multiply
    45,750.69x = 68,619.11 × 12,473.46
  4. Step 4: Simplify right side
    45,750.69x = 855,917,661.45
  5. Step 5: Solve for x
    x = 855,917,661.45/45,750.69
  6. Step 6: Final answer
    x = 18,708.30

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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.