Home / 90,042.98-135,072.14-26,859.03

Finding the Fourth Proportional to 90,042.98, 135,072.14 and 26,859.03

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Solution

The fourth proportional to 90,042.98, 135,072.14 and 26,859.03 is: 40,290.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,042.98 : 135,072.14 = 26,859.03 : x
  2. Step 2: Convert to fraction form
    90,042.98/135,072.14 = 26,859.03/x
  3. Step 3: Cross multiply
    90,042.98x = 135,072.14 × 26,859.03
  4. Step 4: Simplify right side
    90,042.98x = 3,627,906,660.42
  5. Step 5: Solve for x
    x = 3,627,906,660.42/90,042.98
  6. Step 6: Final answer
    x = 40,290.83

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1.5x scale

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.