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Finding the Fourth Proportional to 47,867.50, 71,801.25 and 12,806.25

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Solution

The fourth proportional to 47,867.50, 71,801.25 and 12,806.25 is: 19,209.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,867.50 : 71,801.25 = 12,806.25 : x
  2. Step 2: Convert to fraction form
    47,867.50/71,801.25 = 12,806.25/x
  3. Step 3: Cross multiply
    47,867.50x = 71,801.25 × 12,806.25
  4. Step 4: Simplify right side
    47,867.50x = 919,504,757.81
  5. Step 5: Solve for x
    x = 919,504,757.81/47,867.50
  6. Step 6: Final answer
    x = 19,209.38

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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.