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Finding the Fourth Proportional to 69,976.51, 104,954.94 and 20,060.87

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Solution

The fourth proportional to 69,976.51, 104,954.94 and 20,060.87 is: 30,088.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,976.51 : 104,954.94 = 20,060.87 : x
  2. Step 2: Convert to fraction form
    69,976.51/104,954.94 = 20,060.87/x
  3. Step 3: Cross multiply
    69,976.51x = 104,954.94 × 20,060.87
  4. Step 4: Simplify right side
    69,976.51x = 2,105,486,882.42
  5. Step 5: Solve for x
    x = 2,105,486,882.42/69,976.51
  6. Step 6: Final answer
    x = 30,088.48

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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.