Home / 90,042.12-135,070.01-26,857.29

Finding the Fourth Proportional to 90,042.12, 135,070.01 and 26,857.29

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Solution

The fourth proportional to 90,042.12, 135,070.01 and 26,857.29 is: 40,287.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,042.12 : 135,070.01 = 26,857.29 : x
  2. Step 2: Convert to fraction form
    90,042.12/135,070.01 = 26,857.29/x
  3. Step 3: Cross multiply
    90,042.12x = 135,070.01 × 26,857.29
  4. Step 4: Simplify right side
    90,042.12x = 3,627,614,294.59
  5. Step 5: Solve for x
    x = 3,627,614,294.59/90,042.12
  6. Step 6: Final answer
    x = 40,287.97

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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.