Home / 76,874,525.48-115,340,688.78-45,768,131.65

Finding the Fourth Proportional to 76,874,525.48, 115,340,688.78 and 45,768,131.65

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Solution

The fourth proportional to 76,874,525.48, 115,340,688.78 and 45,768,131.65 is: 68,669,403.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,874,525.48 : 115,340,688.78 = 45,768,131.65 : x
  2. Step 2: Convert to fraction form
    76,874,525.48/115,340,688.78 = 45,768,131.65/x
  3. Step 3: Cross multiply
    76,874,525.48x = 115,340,688.78 × 45,768,131.65
  4. Step 4: Simplify right side
    76,874,525.48x = 5,278,927,828,684,718
  5. Step 5: Solve for x
    x = 5,278,927,828,684,718/76,874,525.48
  6. Step 6: Final answer
    x = 68,669,403.76

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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.