Home / 81,909,497.80-122,864,246.70-21,325,223.80

Finding the Fourth Proportional to 81,909,497.80, 122,864,246.70 and 21,325,223.80

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Solution

The fourth proportional to 81,909,497.80, 122,864,246.70 and 21,325,223.80 is: 31,987,835.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,909,497.80 : 122,864,246.70 = 21,325,223.80 : x
  2. Step 2: Convert to fraction form
    81,909,497.80/122,864,246.70 = 21,325,223.80/x
  3. Step 3: Cross multiply
    81,909,497.80x = 122,864,246.70 × 21,325,223.80
  4. Step 4: Simplify right side
    81,909,497.80x = 2,620,107,557,895,911.50
  5. Step 5: Solve for x
    x = 2,620,107,557,895,911.50/81,909,497.80
  6. Step 6: Final answer
    x = 31,987,835.70

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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.