Home / 76,389,974.20-114,416,999.70-66,312,278.20

Finding the Fourth Proportional to 76,389,974.20, 114,416,999.70 and 66,312,278.20

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Solution

The fourth proportional to 76,389,974.20, 114,416,999.70 and 66,312,278.20 is: 99,322,613.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,389,974.20 : 114,416,999.70 = 66,312,278.20 : x
  2. Step 2: Convert to fraction form
    76,389,974.20/114,416,999.70 = 66,312,278.20/x
  3. Step 3: Cross multiply
    76,389,974.20x = 114,416,999.70 × 66,312,278.20
  4. Step 4: Simplify right side
    76,389,974.20x = 7,587,251,914,915,717
  5. Step 5: Solve for x
    x = 7,587,251,914,915,717/76,389,974.20
  6. Step 6: Final answer
    x = 99,322,613.92

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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.