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Finding the Fourth Proportional to 48,417.72, 72,606.04 and 18,815.30

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Solution

The fourth proportional to 48,417.72, 72,606.04 and 18,815.30 is: 28,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,417.72 : 72,606.04 = 18,815.30 : x
  2. Step 2: Convert to fraction form
    48,417.72/72,606.04 = 18,815.30/x
  3. Step 3: Cross multiply
    48,417.72x = 72,606.04 × 18,815.30
  4. Step 4: Simplify right side
    48,417.72x = 1,366,104,286.62
  5. Step 5: Solve for x
    x = 1,366,104,286.62/48,417.72
  6. Step 6: Final answer
    x = 28,214.97

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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.