Home / 87,965.40-131,946.96-21,405.57

Finding the Fourth Proportional to 87,965.40, 131,946.96 and 21,405.57

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Solution

The fourth proportional to 87,965.40, 131,946.96 and 21,405.57 is: 32,108.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,965.40 : 131,946.96 = 21,405.57 : x
  2. Step 2: Convert to fraction form
    87,965.40/131,946.96 = 21,405.57/x
  3. Step 3: Cross multiply
    87,965.40x = 131,946.96 × 21,405.57
  4. Step 4: Simplify right side
    87,965.40x = 2,824,399,888.57
  5. Step 5: Solve for x
    x = 2,824,399,888.57/87,965.40
  6. Step 6: Final answer
    x = 32,108.08

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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.