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Finding the Fourth Proportional to 73,470.38, 101,389.19 and 39,936.38

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Solution

The fourth proportional to 73,470.38, 101,389.19 and 39,936.38 is: 55,112.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,470.38 : 101,389.19 = 39,936.38 : x
  2. Step 2: Convert to fraction form
    73,470.38/101,389.19 = 39,936.38/x
  3. Step 3: Cross multiply
    73,470.38x = 101,389.19 × 39,936.38
  4. Step 4: Simplify right side
    73,470.38x = 4,049,116,513.10
  5. Step 5: Solve for x
    x = 4,049,116,513.10/73,470.38
  6. Step 6: Final answer
    x = 55,112.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.