Home / 90,005.85-135,003.26-37,415.79

Finding the Fourth Proportional to 90,005.85, 135,003.26 and 37,415.79

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Solution

The fourth proportional to 90,005.85, 135,003.26 and 37,415.79 is: 56,121.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,005.85 : 135,003.26 = 37,415.79 : x
  2. Step 2: Convert to fraction form
    90,005.85/135,003.26 = 37,415.79/x
  3. Step 3: Cross multiply
    90,005.85x = 135,003.26 × 37,415.79
  4. Step 4: Simplify right side
    90,005.85x = 5,051,253,719.01
  5. Step 5: Solve for x
    x = 5,051,253,719.01/90,005.85
  6. Step 6: Final answer
    x = 56,121.39

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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.