Home / 51,219.88-76,811.37-21,640.02

Finding the Fourth Proportional to 51,219.88, 76,811.37 and 21,640.02

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Solution

The fourth proportional to 51,219.88, 76,811.37 and 21,640.02 is: 32,452.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,219.88 : 76,811.37 = 21,640.02 : x
  2. Step 2: Convert to fraction form
    51,219.88/76,811.37 = 21,640.02/x
  3. Step 3: Cross multiply
    51,219.88x = 76,811.37 × 21,640.02
  4. Step 4: Simplify right side
    51,219.88x = 1,662,199,829.99
  5. Step 5: Solve for x
    x = 1,662,199,829.99/51,219.88
  6. Step 6: Final answer
    x = 32,452.24

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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.