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Finding the Fourth Proportional to 69,385.28, 104,109.62 and 37,747.91

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Solution

The fourth proportional to 69,385.28, 104,109.62 and 37,747.91 is: 56,639.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,385.28 : 104,109.62 = 37,747.91 : x
  2. Step 2: Convert to fraction form
    69,385.28/104,109.62 = 37,747.91/x
  3. Step 3: Cross multiply
    69,385.28x = 104,109.62 × 37,747.91
  4. Step 4: Simplify right side
    69,385.28x = 3,929,920,637.43
  5. Step 5: Solve for x
    x = 3,929,920,637.43/69,385.28
  6. Step 6: Final answer
    x = 56,639.12

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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.