Home / 90,423.78-135,348.93-50,863.38

Finding the Fourth Proportional to 90,423.78, 135,348.93 and 50,863.38

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Solution

The fourth proportional to 90,423.78, 135,348.93 and 50,863.38 is: 76,133.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,423.78 : 135,348.93 = 50,863.38 : x
  2. Step 2: Convert to fraction form
    90,423.78/135,348.93 = 50,863.38/x
  3. Step 3: Cross multiply
    90,423.78x = 135,348.93 × 50,863.38
  4. Step 4: Simplify right side
    90,423.78x = 6,884,304,059.18
  5. Step 5: Solve for x
    x = 6,884,304,059.18/90,423.78
  6. Step 6: Final answer
    x = 76,133.78

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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.