Home / 90,991,857.28-136,487,786.28-30,407,583.28

Finding the Fourth Proportional to 90,991,857.28, 136,487,786.28 and 30,407,583.28

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Solution

The fourth proportional to 90,991,857.28, 136,487,786.28 and 30,407,583.28 is: 45,611,375.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,991,857.28 : 136,487,786.28 = 30,407,583.28 : x
  2. Step 2: Convert to fraction form
    90,991,857.28/136,487,786.28 = 30,407,583.28/x
  3. Step 3: Cross multiply
    90,991,857.28x = 136,487,786.28 × 30,407,583.28
  4. Step 4: Simplify right side
    90,991,857.28x = 4,150,263,728,011,941.50
  5. Step 5: Solve for x
    x = 4,150,263,728,011,941.50/90,991,857.28
  6. Step 6: Final answer
    x = 45,611,375.04

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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.