Home / 66,115,202.40-99,172,803.60-20,690,920.80

Finding the Fourth Proportional to 66,115,202.40, 99,172,803.60 and 20,690,920.80

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Solution

The fourth proportional to 66,115,202.40, 99,172,803.60 and 20,690,920.80 is: 31,036,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,115,202.40 : 99,172,803.60 = 20,690,920.80 : x
  2. Step 2: Convert to fraction form
    66,115,202.40/99,172,803.60 = 20,690,920.80/x
  3. Step 3: Cross multiply
    66,115,202.40x = 99,172,803.60 × 20,690,920.80
  4. Step 4: Simplify right side
    66,115,202.40x = 2,051,976,624,801,554.75
  5. Step 5: Solve for x
    x = 2,051,976,624,801,554.75/66,115,202.40
  6. Step 6: Final answer
    x = 31,036,381.20

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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.