Home / 56,136.20-84,236.70-21,079.40

Finding the Fourth Proportional to 56,136.20, 84,236.70 and 21,079.40

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Solution

The fourth proportional to 56,136.20, 84,236.70 and 21,079.40 is: 31,631.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,136.20 : 84,236.70 = 21,079.40 : x
  2. Step 2: Convert to fraction form
    56,136.20/84,236.70 = 21,079.40/x
  3. Step 3: Cross multiply
    56,136.20x = 84,236.70 × 21,079.40
  4. Step 4: Simplify right side
    56,136.20x = 1,775,659,093.98
  5. Step 5: Solve for x
    x = 1,775,659,093.98/56,136.20
  6. Step 6: Final answer
    x = 31,631.27

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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.