Home / 90,131,306.78-135,195,492.96-28,719,636.21

Finding the Fourth Proportional to 90,131,306.78, 135,195,492.96 and 28,719,636.21

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Solution

The fourth proportional to 90,131,306.78, 135,195,492.96 and 28,719,636.21 is: 43,078,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,131,306.78 : 135,195,492.96 = 28,719,636.21 : x
  2. Step 2: Convert to fraction form
    90,131,306.78/135,195,492.96 = 28,719,636.21/x
  3. Step 3: Cross multiply
    90,131,306.78x = 135,195,492.96 × 28,719,636.21
  4. Step 4: Simplify right side
    90,131,306.78x = 3,882,765,375,042,816.50
  5. Step 5: Solve for x
    x = 3,882,765,375,042,816.50/90,131,306.78
  6. Step 6: Final answer
    x = 43,078,986.80

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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.