Home / 81,387,474.20-122,081,211.30-66,081,973.40

Finding the Fourth Proportional to 81,387,474.20, 122,081,211.30 and 66,081,973.40

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Solution

The fourth proportional to 81,387,474.20, 122,081,211.30 and 66,081,973.40 is: 99,122,960.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,387,474.20 : 122,081,211.30 = 66,081,973.40 : x
  2. Step 2: Convert to fraction form
    81,387,474.20/122,081,211.30 = 66,081,973.40/x
  3. Step 3: Cross multiply
    81,387,474.20x = 122,081,211.30 × 66,081,973.40
  4. Step 4: Simplify right side
    81,387,474.20x = 8,067,367,357,766,379
  5. Step 5: Solve for x
    x = 8,067,367,357,766,379/81,387,474.20
  6. Step 6: Final answer
    x = 99,122,960.10

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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.