Home / 87,971.58-131,955.52-21,412.08

Finding the Fourth Proportional to 87,971.58, 131,955.52 and 21,412.08

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Solution

The fourth proportional to 87,971.58, 131,955.52 and 21,412.08 is: 32,117.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,971.58 : 131,955.52 = 21,412.08 : x
  2. Step 2: Convert to fraction form
    87,971.58/131,955.52 = 21,412.08/x
  3. Step 3: Cross multiply
    87,971.58x = 131,955.52 × 21,412.08
  4. Step 4: Simplify right side
    87,971.58x = 2,825,442,043.62
  5. Step 5: Solve for x
    x = 2,825,442,043.62/87,971.58
  6. Step 6: Final answer
    x = 32,117.67

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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.