Home / 81,576,205.20-122,364,307.80-61,420,813.20

Finding the Fourth Proportional to 81,576,205.20, 122,364,307.80 and 61,420,813.20

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Solution

The fourth proportional to 81,576,205.20, 122,364,307.80 and 61,420,813.20 is: 92,131,219.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,576,205.20 : 122,364,307.80 = 61,420,813.20 : x
  2. Step 2: Convert to fraction form
    81,576,205.20/122,364,307.80 = 61,420,813.20/x
  3. Step 3: Cross multiply
    81,576,205.20x = 122,364,307.80 × 61,420,813.20
  4. Step 4: Simplify right side
    81,576,205.20x = 7,515,715,291,731,103
  5. Step 5: Solve for x
    x = 7,515,715,291,731,103/81,576,205.20
  6. Step 6: Final answer
    x = 92,131,219.80

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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.