Home / 51,210.12-76,786.26-21,207.42

Finding the Fourth Proportional to 51,210.12, 76,786.26 and 21,207.42

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Solution

The fourth proportional to 51,210.12, 76,786.26 and 21,207.42 is: 31,799.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,210.12 : 76,786.26 = 21,207.42 : x
  2. Step 2: Convert to fraction form
    51,210.12/76,786.26 = 21,207.42/x
  3. Step 3: Cross multiply
    51,210.12x = 76,786.26 × 21,207.42
  4. Step 4: Simplify right side
    51,210.12x = 1,628,438,466.05
  5. Step 5: Solve for x
    x = 1,628,438,466.05/51,210.12
  6. Step 6: Final answer
    x = 31,799.15

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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.