Home / 76,790.35-115,187.34-20,630.53

Finding the Fourth Proportional to 76,790.35, 115,187.34 and 20,630.53

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Solution

The fourth proportional to 76,790.35, 115,187.34 and 20,630.53 is: 30,946.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,790.35 : 115,187.34 = 20,630.53 : x
  2. Step 2: Convert to fraction form
    76,790.35/115,187.34 = 20,630.53/x
  3. Step 3: Cross multiply
    76,790.35x = 115,187.34 × 20,630.53
  4. Step 4: Simplify right side
    76,790.35x = 2,376,375,873.49
  5. Step 5: Solve for x
    x = 2,376,375,873.49/76,790.35
  6. Step 6: Final answer
    x = 30,946.28

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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.