Home / 76,733,959.60-115,100,939.40-66,880,212.40

Finding the Fourth Proportional to 76,733,959.60, 115,100,939.40 and 66,880,212.40

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Solution

The fourth proportional to 76,733,959.60, 115,100,939.40 and 66,880,212.40 is: 100,320,318.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,733,959.60 : 115,100,939.40 = 66,880,212.40 : x
  2. Step 2: Convert to fraction form
    76,733,959.60/115,100,939.40 = 66,880,212.40/x
  3. Step 3: Cross multiply
    76,733,959.60x = 115,100,939.40 × 66,880,212.40
  4. Step 4: Simplify right side
    76,733,959.60x = 7,697,975,274,511,529
  5. Step 5: Solve for x
    x = 7,697,975,274,511,529/76,733,959.60
  6. Step 6: Final answer
    x = 100,320,318.60

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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.