Home / 77,405,065.65-115,971,394.14-72,796,881.69

Finding the Fourth Proportional to 77,405,065.65, 115,971,394.14 and 72,796,881.69

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Solution

The fourth proportional to 77,405,065.65, 115,971,394.14 and 72,796,881.69 is: 109,067,226.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,405,065.65 : 115,971,394.14 = 72,796,881.69 : x
  2. Step 2: Convert to fraction form
    77,405,065.65/115,971,394.14 = 72,796,881.69/x
  3. Step 3: Cross multiply
    77,405,065.65x = 115,971,394.14 × 72,796,881.69
  4. Step 4: Simplify right side
    77,405,065.65x = 8,442,355,858,633,939
  5. Step 5: Solve for x
    x = 8,442,355,858,633,939/77,405,065.65
  6. Step 6: Final answer
    x = 109,067,226.90

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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.