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Finding the Fourth Proportional to 48,340.40, 72,467.40 and 18,748.40

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Solution

The fourth proportional to 48,340.40, 72,467.40 and 18,748.40 is: 28,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,340.40 : 72,467.40 = 18,748.40 : x
  2. Step 2: Convert to fraction form
    48,340.40/72,467.40 = 18,748.40/x
  3. Step 3: Cross multiply
    48,340.40x = 72,467.40 × 18,748.40
  4. Step 4: Simplify right side
    48,340.40x = 1,358,647,802.16
  5. Step 5: Solve for x
    x = 1,358,647,802.16/48,340.40
  6. Step 6: Final answer
    x = 28,105.85

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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.