Home / 87,813.45-131,719.64-28,649.16

Finding the Fourth Proportional to 87,813.45, 131,719.64 and 28,649.16

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Solution

The fourth proportional to 87,813.45, 131,719.64 and 28,649.16 is: 42,973.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,813.45 : 131,719.64 = 28,649.16 : x
  2. Step 2: Convert to fraction form
    87,813.45/131,719.64 = 28,649.16/x
  3. Step 3: Cross multiply
    87,813.45x = 131,719.64 × 28,649.16
  4. Step 4: Simplify right side
    87,813.45x = 3,773,656,898.26
  5. Step 5: Solve for x
    x = 3,773,656,898.26/87,813.45
  6. Step 6: Final answer
    x = 42,973.56

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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.