Home / 90,509,633.40-135,764,450.10-54,229,927.80

Finding the Fourth Proportional to 90,509,633.40, 135,764,450.10 and 54,229,927.80

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Solution

The fourth proportional to 90,509,633.40, 135,764,450.10 and 54,229,927.80 is: 81,344,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,509,633.40 : 135,764,450.10 = 54,229,927.80 : x
  2. Step 2: Convert to fraction form
    90,509,633.40/135,764,450.10 = 54,229,927.80/x
  3. Step 3: Cross multiply
    90,509,633.40x = 135,764,450.10 × 54,229,927.80
  4. Step 4: Simplify right side
    90,509,633.40x = 7,362,496,326,729,702
  5. Step 5: Solve for x
    x = 7,362,496,326,729,702/90,509,633.40
  6. Step 6: Final answer
    x = 81,344,891.70

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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.