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Finding the Fourth Proportional to 55,958.78, 83,960.03 and 20,901.17

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Solution

The fourth proportional to 55,958.78, 83,960.03 and 20,901.17 is: 31,359.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,958.78 : 83,960.03 = 20,901.17 : x
  2. Step 2: Convert to fraction form
    55,958.78/83,960.03 = 20,901.17/x
  3. Step 3: Cross multiply
    55,958.78x = 83,960.03 × 20,901.17
  4. Step 4: Simplify right side
    55,958.78x = 1,754,863,004.82
  5. Step 5: Solve for x
    x = 1,754,863,004.82/55,958.78
  6. Step 6: Final answer
    x = 31,359.92

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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.