Home / 87,631.13-131,446.63-21,071.24

Finding the Fourth Proportional to 87,631.13, 131,446.63 and 21,071.24

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Solution

The fourth proportional to 87,631.13, 131,446.63 and 21,071.24 is: 31,606.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,631.13 : 131,446.63 = 21,071.24 : x
  2. Step 2: Convert to fraction form
    87,631.13/131,446.63 = 21,071.24/x
  3. Step 3: Cross multiply
    87,631.13x = 131,446.63 × 21,071.24
  4. Step 4: Simplify right side
    87,631.13x = 2,769,742,778.01
  5. Step 5: Solve for x
    x = 2,769,742,778.01/87,631.13
  6. Step 6: Final answer
    x = 31,606.84

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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.