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Finding the Fourth Proportional to 43,185.86, 64,787.49 and 18,225.93

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Solution

The fourth proportional to 43,185.86, 64,787.49 and 18,225.93 is: 27,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,185.86 : 64,787.49 = 18,225.93 : x
  2. Step 2: Convert to fraction form
    43,185.86/64,787.49 = 18,225.93/x
  3. Step 3: Cross multiply
    43,185.86x = 64,787.49 × 18,225.93
  4. Step 4: Simplify right side
    43,185.86x = 1,180,812,257.62
  5. Step 5: Solve for x
    x = 1,180,812,257.62/43,185.86
  6. Step 6: Final answer
    x = 27,342.57

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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.