Home / 87,428.30-131,114.64-28,249.98

Finding the Fourth Proportional to 87,428.30, 131,114.64 and 28,249.98

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Solution

The fourth proportional to 87,428.30, 131,114.64 and 28,249.98 is: 42,365.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,428.30 : 131,114.64 = 28,249.98 : x
  2. Step 2: Convert to fraction form
    87,428.30/131,114.64 = 28,249.98/x
  3. Step 3: Cross multiply
    87,428.30x = 131,114.64 × 28,249.98
  4. Step 4: Simplify right side
    87,428.30x = 3,703,985,957.71
  5. Step 5: Solve for x
    x = 3,703,985,957.71/87,428.30
  6. Step 6: Final answer
    x = 42,365.98

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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.