Home / 87,645.72-131,421.81-45,483.36

Finding the Fourth Proportional to 87,645.72, 131,421.81 and 45,483.36

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Solution

The fourth proportional to 87,645.72, 131,421.81 and 45,483.36 is: 68,200.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,645.72 : 131,421.81 = 45,483.36 : x
  2. Step 2: Convert to fraction form
    87,645.72/131,421.81 = 45,483.36/x
  3. Step 3: Cross multiply
    87,645.72x = 131,421.81 × 45,483.36
  4. Step 4: Simplify right side
    87,645.72x = 5,977,505,496.08
  5. Step 5: Solve for x
    x = 5,977,505,496.08/87,645.72
  6. Step 6: Final answer
    x = 68,200.77

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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.