Home / 87,865.55-131,798.74-21,305.67

Finding the Fourth Proportional to 87,865.55, 131,798.74 and 21,305.67

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Solution

The fourth proportional to 87,865.55, 131,798.74 and 21,305.67 is: 31,958.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,865.55 : 131,798.74 = 21,305.67 : x
  2. Step 2: Convert to fraction form
    87,865.55/131,798.74 = 21,305.67/x
  3. Step 3: Cross multiply
    87,865.55x = 131,798.74 × 21,305.67
  4. Step 4: Simplify right side
    87,865.55x = 2,808,060,460.86
  5. Step 5: Solve for x
    x = 2,808,060,460.86/87,865.55
  6. Step 6: Final answer
    x = 31,958.61

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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.