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Finding the Fourth Proportional to 48,859.08, 67,421.81 and 27,639.72

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Solution

The fourth proportional to 48,859.08, 67,421.81 and 27,639.72 is: 38,140.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,859.08 : 67,421.81 = 27,639.72 : x
  2. Step 2: Convert to fraction form
    48,859.08/67,421.81 = 27,639.72/x
  3. Step 3: Cross multiply
    48,859.08x = 67,421.81 × 27,639.72
  4. Step 4: Simplify right side
    48,859.08x = 1,863,519,812.09
  5. Step 5: Solve for x
    x = 1,863,519,812.09/48,859.08
  6. Step 6: Final answer
    x = 38,140.71

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.