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Finding the Fourth Proportional to 48,840, 67,409.28 and 27,620.16

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Solution

The fourth proportional to 48,840, 67,409.28 and 27,620.16 is: 38,121.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,840 : 67,409.28 = 27,620.16 : x
  2. Step 2: Convert to fraction form
    48,840/67,409.28 = 27,620.16/x
  3. Step 3: Cross multiply
    48,840x = 67,409.28 × 27,620.16
  4. Step 4: Simplify right side
    48,840x = 1,861,855,099.08
  5. Step 5: Solve for x
    x = 1,861,855,099.08/48,840
  6. Step 6: Final answer
    x = 38,121.52

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Why These Related Problems?

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