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Finding the Fourth Proportional to 69,398.40, 104,166.72 and 38,248.32

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Solution

The fourth proportional to 69,398.40, 104,166.72 and 38,248.32 is: 57,410.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,398.40 : 104,166.72 = 38,248.32 : x
  2. Step 2: Convert to fraction form
    69,398.40/104,166.72 = 38,248.32/x
  3. Step 3: Cross multiply
    69,398.40x = 104,166.72 × 38,248.32
  4. Step 4: Simplify right side
    69,398.40x = 3,984,202,039.91
  5. Step 5: Solve for x
    x = 3,984,202,039.91/69,398.40
  6. Step 6: Final answer
    x = 57,410.57

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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.