Home / 51,300.42-76,932.21-21,720.36

Finding the Fourth Proportional to 51,300.42, 76,932.21 and 21,720.36

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Solution

The fourth proportional to 51,300.42, 76,932.21 and 21,720.36 is: 32,572.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,300.42 : 76,932.21 = 21,720.36 : x
  2. Step 2: Convert to fraction form
    51,300.42/76,932.21 = 21,720.36/x
  3. Step 3: Cross multiply
    51,300.42x = 76,932.21 × 21,720.36
  4. Step 4: Simplify right side
    51,300.42x = 1,670,995,296.80
  5. Step 5: Solve for x
    x = 1,670,995,296.80/51,300.42
  6. Step 6: Final answer
    x = 32,572.74

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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.