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Finding the Fourth Proportional to 47,998.72, 71,998.56 and 47,929.60

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Solution

The fourth proportional to 47,998.72, 71,998.56 and 47,929.60 is: 71,894.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,998.72 : 71,998.56 = 47,929.60 : x
  2. Step 2: Convert to fraction form
    47,998.72/71,998.56 = 47,929.60/x
  3. Step 3: Cross multiply
    47,998.72x = 71,998.56 × 47,929.60
  4. Step 4: Simplify right side
    47,998.72x = 3,450,862,181.38
  5. Step 5: Solve for x
    x = 3,450,862,181.38/47,998.72
  6. Step 6: Final answer
    x = 71,894.88

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1.5x scale

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.