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Finding the Fourth Proportional to 72,394.38, 108,591.66 and 19,804.32

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Solution

The fourth proportional to 72,394.38, 108,591.66 and 19,804.32 is: 29,706.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,394.38 : 108,591.66 = 19,804.32 : x
  2. Step 2: Convert to fraction form
    72,394.38/108,591.66 = 19,804.32/x
  3. Step 3: Cross multiply
    72,394.38x = 108,591.66 × 19,804.32
  4. Step 4: Simplify right side
    72,394.38x = 2,150,583,983.97
  5. Step 5: Solve for x
    x = 2,150,583,983.97/72,394.38
  6. Step 6: Final answer
    x = 29,706.50

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1.5x scale

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.