Home / 90,801,912.60-136,202,868.90-54,451,348.20

Finding the Fourth Proportional to 90,801,912.60, 136,202,868.90 and 54,451,348.20

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Solution

The fourth proportional to 90,801,912.60, 136,202,868.90 and 54,451,348.20 is: 81,677,022.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,801,912.60 : 136,202,868.90 = 54,451,348.20 : x
  2. Step 2: Convert to fraction form
    90,801,912.60/136,202,868.90 = 54,451,348.20/x
  3. Step 3: Cross multiply
    90,801,912.60x = 136,202,868.90 × 54,451,348.20
  4. Step 4: Simplify right side
    90,801,912.60x = 7,416,429,840,312,852
  5. Step 5: Solve for x
    x = 7,416,429,840,312,852/90,801,912.60
  6. Step 6: Final answer
    x = 81,677,022.30

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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.