Home / 80,858,076.30-121,287,114.45-66,509,169.30

Finding the Fourth Proportional to 80,858,076.30, 121,287,114.45 and 66,509,169.30

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Solution

The fourth proportional to 80,858,076.30, 121,287,114.45 and 66,509,169.30 is: 99,763,753.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,858,076.30 : 121,287,114.45 = 66,509,169.30 : x
  2. Step 2: Convert to fraction form
    80,858,076.30/121,287,114.45 = 66,509,169.30/x
  3. Step 3: Cross multiply
    80,858,076.30x = 121,287,114.45 × 66,509,169.30
  4. Step 4: Simplify right side
    80,858,076.30x = 8,066,705,228,863,526
  5. Step 5: Solve for x
    x = 8,066,705,228,863,526/80,858,076.30
  6. Step 6: Final answer
    x = 99,763,753.95

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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.