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Finding the Fourth Proportional to 84,812.70, 127,344.60 and 47,447.40

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Solution

The fourth proportional to 84,812.70, 127,344.60 and 47,447.40 is: 71,241.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,812.70 : 127,344.60 = 47,447.40 : x
  2. Step 2: Convert to fraction form
    84,812.70/127,344.60 = 47,447.40/x
  3. Step 3: Cross multiply
    84,812.70x = 127,344.60 × 47,447.40
  4. Step 4: Simplify right side
    84,812.70x = 6,042,170,174.04
  5. Step 5: Solve for x
    x = 6,042,170,174.04/84,812.70
  6. Step 6: Final answer
    x = 71,241.34

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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.