Home / 45,142.82-67,725.75-28,620.26

Finding the Fourth Proportional to 45,142.82, 67,725.75 and 28,620.26

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Solution

The fourth proportional to 45,142.82, 67,725.75 and 28,620.26 is: 42,937.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,142.82 : 67,725.75 = 28,620.26 : x
  2. Step 2: Convert to fraction form
    45,142.82/67,725.75 = 28,620.26/x
  3. Step 3: Cross multiply
    45,142.82x = 67,725.75 × 28,620.26
  4. Step 4: Simplify right side
    45,142.82x = 1,938,328,573.70
  5. Step 5: Solve for x
    x = 1,938,328,573.70/45,142.82
  6. Step 6: Final answer
    x = 42,937.69

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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.