Home / 76,790.76-115,178.35-20,623.57

Finding the Fourth Proportional to 76,790.76, 115,178.35 and 20,623.57

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Solution

The fourth proportional to 76,790.76, 115,178.35 and 20,623.57 is: 30,933.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,790.76 : 115,178.35 = 20,623.57 : x
  2. Step 2: Convert to fraction form
    76,790.76/115,178.35 = 20,623.57/x
  3. Step 3: Cross multiply
    76,790.76x = 115,178.35 × 20,623.57
  4. Step 4: Simplify right side
    76,790.76x = 2,375,388,763.71
  5. Step 5: Solve for x
    x = 2,375,388,763.71/76,790.76
  6. Step 6: Final answer
    x = 30,933.26

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1.5x scale

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.