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Finding the Fourth Proportional to 71,273.40, 106,935.70 and 68,713.40

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Solution

The fourth proportional to 71,273.40, 106,935.70 and 68,713.40 is: 103,094.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,273.40 : 106,935.70 = 68,713.40 : x
  2. Step 2: Convert to fraction form
    71,273.40/106,935.70 = 68,713.40/x
  3. Step 3: Cross multiply
    71,273.40x = 106,935.70 × 68,713.40
  4. Step 4: Simplify right side
    71,273.40x = 7,347,915,528.38
  5. Step 5: Solve for x
    x = 7,347,915,528.38/71,273.40
  6. Step 6: Final answer
    x = 103,094.78

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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.