Home / 87,587.30-131,399.40-28,418.34

Finding the Fourth Proportional to 87,587.30, 131,399.40 and 28,418.34

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Solution

The fourth proportional to 87,587.30, 131,399.40 and 28,418.34 is: 42,633.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,587.30 : 131,399.40 = 28,418.34 : x
  2. Step 2: Convert to fraction form
    87,587.30/131,399.40 = 28,418.34/x
  3. Step 3: Cross multiply
    87,587.30x = 131,399.40 × 28,418.34
  4. Step 4: Simplify right side
    87,587.30x = 3,734,152,825.00
  5. Step 5: Solve for x
    x = 3,734,152,825.00/87,587.30
  6. Step 6: Final answer
    x = 42,633.50

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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.