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Finding the Fourth Proportional to 47,866.50, 71,799.75 and 12,805.25

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Solution

The fourth proportional to 47,866.50, 71,799.75 and 12,805.25 is: 19,207.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,866.50 : 71,799.75 = 12,805.25 : x
  2. Step 2: Convert to fraction form
    47,866.50/71,799.75 = 12,805.25/x
  3. Step 3: Cross multiply
    47,866.50x = 71,799.75 × 12,805.25
  4. Step 4: Simplify right side
    47,866.50x = 919,413,389.69
  5. Step 5: Solve for x
    x = 919,413,389.69/47,866.50
  6. Step 6: Final answer
    x = 19,207.87

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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.