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Finding the Fourth Proportional to 73,677.78, 101,675.34 and 40,143.78

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Solution

The fourth proportional to 73,677.78, 101,675.34 and 40,143.78 is: 55,398.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,677.78 : 101,675.34 = 40,143.78 : x
  2. Step 2: Convert to fraction form
    73,677.78/101,675.34 = 40,143.78/x
  3. Step 3: Cross multiply
    73,677.78x = 101,675.34 × 40,143.78
  4. Step 4: Simplify right side
    73,677.78x = 4,081,632,480.39
  5. Step 5: Solve for x
    x = 4,081,632,480.39/73,677.78
  6. Step 6: Final answer
    x = 55,398.42

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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.