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Finding the Fourth Proportional to 43,805.88, 60,431.04 and 28,692

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Solution

The fourth proportional to 43,805.88, 60,431.04 and 28,692 is: 39,581.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,805.88 : 60,431.04 = 28,692 : x
  2. Step 2: Convert to fraction form
    43,805.88/60,431.04 = 28,692/x
  3. Step 3: Cross multiply
    43,805.88x = 60,431.04 × 28,692
  4. Step 4: Simplify right side
    43,805.88x = 1,733,887,399.68
  5. Step 5: Solve for x
    x = 1,733,887,399.68/43,805.88
  6. Step 6: Final answer
    x = 39,581.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.