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Finding the Fourth Proportional to 29,300, 40,439.20 and 28,327.84

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Solution

The fourth proportional to 29,300, 40,439.20 and 28,327.84 is: 39,097.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,300 : 40,439.20 = 28,327.84 : x
  2. Step 2: Convert to fraction form
    29,300/40,439.20 = 28,327.84/x
  3. Step 3: Cross multiply
    29,300x = 40,439.20 × 28,327.84
  4. Step 4: Simplify right side
    29,300x = 1,145,555,187.33
  5. Step 5: Solve for x
    x = 1,145,555,187.33/29,300
  6. Step 6: Final answer
    x = 39,097.45

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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.