Home / 90,234.06-135,331.29-30,270.93

Finding the Fourth Proportional to 90,234.06, 135,331.29 and 30,270.93

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Solution

The fourth proportional to 90,234.06, 135,331.29 and 30,270.93 is: 45,399.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,234.06 : 135,331.29 = 30,270.93 : x
  2. Step 2: Convert to fraction form
    90,234.06/135,331.29 = 30,270.93/x
  3. Step 3: Cross multiply
    90,234.06x = 135,331.29 × 30,270.93
  4. Step 4: Simplify right side
    90,234.06x = 4,096,604,006.40
  5. Step 5: Solve for x
    x = 4,096,604,006.40/90,234.06
  6. Step 6: Final answer
    x = 45,399.75

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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.