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Finding the Fourth Proportional to 43,056, 64,609.92 and 18,432

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Solution

The fourth proportional to 43,056, 64,609.92 and 18,432 is: 27,659.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,056 : 64,609.92 = 18,432 : x
  2. Step 2: Convert to fraction form
    43,056/64,609.92 = 18,432/x
  3. Step 3: Cross multiply
    43,056x = 64,609.92 × 18,432
  4. Step 4: Simplify right side
    43,056x = 1,190,890,045.44
  5. Step 5: Solve for x
    x = 1,190,890,045.44/43,056
  6. Step 6: Final answer
    x = 27,659.10

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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.