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Finding the Fourth Proportional to 73,143.52, 100,938.06 and 39,609.52

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Solution

The fourth proportional to 73,143.52, 100,938.06 and 39,609.52 is: 54,661.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,143.52 : 100,938.06 = 39,609.52 : x
  2. Step 2: Convert to fraction form
    73,143.52/100,938.06 = 39,609.52/x
  3. Step 3: Cross multiply
    73,143.52x = 100,938.06 × 39,609.52
  4. Step 4: Simplify right side
    73,143.52x = 3,998,108,106.33
  5. Step 5: Solve for x
    x = 3,998,108,106.33/73,143.52
  6. Step 6: Final answer
    x = 54,661.14

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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.