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Finding the Fourth Proportional to 104,387.49, 156,441.64 and 54,362.57

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Solution

The fourth proportional to 104,387.49, 156,441.64 and 54,362.57 is: 81,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,387.49 : 156,441.64 = 54,362.57 : x
  2. Step 2: Convert to fraction form
    104,387.49/156,441.64 = 54,362.57/x
  3. Step 3: Cross multiply
    104,387.49x = 156,441.64 × 54,362.57
  4. Step 4: Simplify right side
    104,387.49x = 8,504,569,605.41
  5. Step 5: Solve for x
    x = 8,504,569,605.41/104,387.49
  6. Step 6: Final answer
    x = 81,471.16

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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.