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Finding the Fourth Proportional to 87,401, 131,090.34 and 28,230.52

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Solution

The fourth proportional to 87,401, 131,090.34 and 28,230.52 is: 42,342.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,401 : 131,090.34 = 28,230.52 : x
  2. Step 2: Convert to fraction form
    87,401/131,090.34 = 28,230.52/x
  3. Step 3: Cross multiply
    87,401x = 131,090.34 × 28,230.52
  4. Step 4: Simplify right side
    87,401x = 3,700,748,465.18
  5. Step 5: Solve for x
    x = 3,700,748,465.18/87,401
  6. Step 6: Final answer
    x = 42,342.18

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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.