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Finding the Fourth Proportional to 55,988.20, 83,982.30 and 20,923.30

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Solution

The fourth proportional to 55,988.20, 83,982.30 and 20,923.30 is: 31,384.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,988.20 : 83,982.30 = 20,923.30 : x
  2. Step 2: Convert to fraction form
    55,988.20/83,982.30 = 20,923.30/x
  3. Step 3: Cross multiply
    55,988.20x = 83,982.30 × 20,923.30
  4. Step 4: Simplify right side
    55,988.20x = 1,757,186,857.59
  5. Step 5: Solve for x
    x = 1,757,186,857.59/55,988.20
  6. Step 6: Final answer
    x = 31,384.95

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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.