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Finding the Fourth Proportional to 47,448.72, 71,165 and 15,855.20

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Solution

The fourth proportional to 47,448.72, 71,165 and 15,855.20 is: 23,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,448.72 : 71,165 = 15,855.20 : x
  2. Step 2: Convert to fraction form
    47,448.72/71,165 = 15,855.20/x
  3. Step 3: Cross multiply
    47,448.72x = 71,165 × 15,855.20
  4. Step 4: Simplify right side
    47,448.72x = 1,128,335,308
  5. Step 5: Solve for x
    x = 1,128,335,308/47,448.72
  6. Step 6: Final answer
    x = 23,780.10

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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.