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Finding the Fourth Proportional to 71,639.46, 107,488.58 and 37,896.68

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Solution

The fourth proportional to 71,639.46, 107,488.58 and 37,896.68 is: 56,860.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,639.46 : 107,488.58 = 37,896.68 : x
  2. Step 2: Convert to fraction form
    71,639.46/107,488.58 = 37,896.68/x
  3. Step 3: Cross multiply
    71,639.46x = 107,488.58 × 37,896.68
  4. Step 4: Simplify right side
    71,639.46x = 4,073,460,319.91
  5. Step 5: Solve for x
    x = 4,073,460,319.91/71,639.46
  6. Step 6: Final answer
    x = 56,860.57

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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.