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Finding the Fourth Proportional to 47,866.37, 71,799.56 and 12,805.12

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Solution

The fourth proportional to 47,866.37, 71,799.56 and 12,805.12 is: 19,207.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,866.37 : 71,799.56 = 12,805.12 : x
  2. Step 2: Convert to fraction form
    47,866.37/71,799.56 = 12,805.12/x
  3. Step 3: Cross multiply
    47,866.37x = 71,799.56 × 12,805.12
  4. Step 4: Simplify right side
    47,866.37x = 919,401,981.75
  5. Step 5: Solve for x
    x = 919,401,981.75/47,866.37
  6. Step 6: Final answer
    x = 19,207.68

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Similar ratio
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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.