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Finding the Fourth Proportional to 60,674.31, 90,900.39 and 43,992.90

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Solution

The fourth proportional to 60,674.31, 90,900.39 and 43,992.90 is: 65,908.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,674.31 : 90,900.39 = 43,992.90 : x
  2. Step 2: Convert to fraction form
    60,674.31/90,900.39 = 43,992.90/x
  3. Step 3: Cross multiply
    60,674.31x = 90,900.39 × 43,992.90
  4. Step 4: Simplify right side
    60,674.31x = 3,998,971,767.23
  5. Step 5: Solve for x
    x = 3,998,971,767.23/60,674.31
  6. Step 6: Final answer
    x = 65,908.81

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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.