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Finding the Fourth Proportional to 31,954, 47,938.80 and 10,066

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Solution

The fourth proportional to 31,954, 47,938.80 and 10,066 is: 15,101.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,954 : 47,938.80 = 10,066 : x
  2. Step 2: Convert to fraction form
    31,954/47,938.80 = 10,066/x
  3. Step 3: Cross multiply
    31,954x = 47,938.80 × 10,066
  4. Step 4: Simplify right side
    31,954x = 482,551,960.80
  5. Step 5: Solve for x
    x = 482,551,960.80/31,954
  6. Step 6: Final answer
    x = 15,101.46

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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.