Home / 87,479.72-131,108.76-55,877.64

Finding the Fourth Proportional to 87,479.72, 131,108.76 and 55,877.64

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Solution

The fourth proportional to 87,479.72, 131,108.76 and 55,877.64 is: 83,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,479.72 : 131,108.76 = 55,877.64 : x
  2. Step 2: Convert to fraction form
    87,479.72/131,108.76 = 55,877.64/x
  3. Step 3: Cross multiply
    87,479.72x = 131,108.76 × 55,877.64
  4. Step 4: Simplify right side
    87,479.72x = 7,326,048,092.13
  5. Step 5: Solve for x
    x = 7,326,048,092.13/87,479.72
  6. Step 6: Final answer
    x = 83,745.67

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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.