Home / 90,129.32-135,212.97-26,954.36

Finding the Fourth Proportional to 90,129.32, 135,212.97 and 26,954.36

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Solution

The fourth proportional to 90,129.32, 135,212.97 and 26,954.36 is: 40,437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,129.32 : 135,212.97 = 26,954.36 : x
  2. Step 2: Convert to fraction form
    90,129.32/135,212.97 = 26,954.36/x
  3. Step 3: Cross multiply
    90,129.32x = 135,212.97 × 26,954.36
  4. Step 4: Simplify right side
    90,129.32x = 3,644,579,070.05
  5. Step 5: Solve for x
    x = 3,644,579,070.05/90,129.32
  6. Step 6: Final answer
    x = 40,437.22

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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.