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Finding the Fourth Proportional to 48,449.34, 72,701.28 and 18,869.22

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Solution

The fourth proportional to 48,449.34, 72,701.28 and 18,869.22 is: 28,314.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,449.34 : 72,701.28 = 18,869.22 : x
  2. Step 2: Convert to fraction form
    48,449.34/72,701.28 = 18,869.22/x
  3. Step 3: Cross multiply
    48,449.34x = 72,701.28 × 18,869.22
  4. Step 4: Simplify right side
    48,449.34x = 1,371,816,446.60
  5. Step 5: Solve for x
    x = 1,371,816,446.60/48,449.34
  6. Step 6: Final answer
    x = 28,314.45

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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.