Home / 77,005,273.80-115,507,910.70-68,345,920.20

Finding the Fourth Proportional to 77,005,273.80, 115,507,910.70 and 68,345,920.20

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Solution

The fourth proportional to 77,005,273.80, 115,507,910.70 and 68,345,920.20 is: 102,518,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,005,273.80 : 115,507,910.70 = 68,345,920.20 : x
  2. Step 2: Convert to fraction form
    77,005,273.80/115,507,910.70 = 68,345,920.20/x
  3. Step 3: Cross multiply
    77,005,273.80x = 115,507,910.70 × 68,345,920.20
  4. Step 4: Simplify right side
    77,005,273.80x = 7,894,494,447,170,927
  5. Step 5: Solve for x
    x = 7,894,494,447,170,927/77,005,273.80
  6. Step 6: Final answer
    x = 102,518,880.30

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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.