Home / 90,389.91-135,504.65-34,190.67

Finding the Fourth Proportional to 90,389.91, 135,504.65 and 34,190.67

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Solution

The fourth proportional to 90,389.91, 135,504.65 and 34,190.67 is: 51,255.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,389.91 : 135,504.65 = 34,190.67 : x
  2. Step 2: Convert to fraction form
    90,389.91/135,504.65 = 34,190.67/x
  3. Step 3: Cross multiply
    90,389.91x = 135,504.65 × 34,190.67
  4. Step 4: Simplify right side
    90,389.91x = 4,632,994,600.66
  5. Step 5: Solve for x
    x = 4,632,994,600.66/90,389.91
  6. Step 6: Final answer
    x = 51,255.66

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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.