Home / 51,294.20-76,894.86-20,121.08

Finding the Fourth Proportional to 51,294.20, 76,894.86 and 20,121.08

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Solution

The fourth proportional to 51,294.20, 76,894.86 and 20,121.08 is: 30,163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,294.20 : 76,894.86 = 20,121.08 : x
  2. Step 2: Convert to fraction form
    51,294.20/76,894.86 = 20,121.08/x
  3. Step 3: Cross multiply
    51,294.20x = 76,894.86 × 20,121.08
  4. Step 4: Simplify right side
    51,294.20x = 1,547,207,629.65
  5. Step 5: Solve for x
    x = 1,547,207,629.65/51,294.20
  6. Step 6: Final answer
    x = 30,163.40

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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.