Home / 90,042.62-135,070.76-26,857.79

Finding the Fourth Proportional to 90,042.62, 135,070.76 and 26,857.79

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Solution

The fourth proportional to 90,042.62, 135,070.76 and 26,857.79 is: 40,288.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,042.62 : 135,070.76 = 26,857.79 : x
  2. Step 2: Convert to fraction form
    90,042.62/135,070.76 = 26,857.79/x
  3. Step 3: Cross multiply
    90,042.62x = 135,070.76 × 26,857.79
  4. Step 4: Simplify right side
    90,042.62x = 3,627,701,972.93
  5. Step 5: Solve for x
    x = 3,627,701,972.93/90,042.62
  6. Step 6: Final answer
    x = 40,288.72

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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.