Home / 87,631.01-120,789.11-68,477.50

Finding the Fourth Proportional to 87,631.01, 120,789.11 and 68,477.50

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Solution

The fourth proportional to 87,631.01, 120,789.11 and 68,477.50 is: 94,388.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,631.01 : 120,789.11 = 68,477.50 : x
  2. Step 2: Convert to fraction form
    87,631.01/120,789.11 = 68,477.50/x
  3. Step 3: Cross multiply
    87,631.01x = 120,789.11 × 68,477.50
  4. Step 4: Simplify right side
    87,631.01x = 8,271,335,676.08
  5. Step 5: Solve for x
    x = 8,271,335,676.08/87,631.01
  6. Step 6: Final answer
    x = 94,388.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.