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Finding the Fourth Proportional to 66,876,076.80, 100,314,115.20 and 60,179,920.20

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Solution

The fourth proportional to 66,876,076.80, 100,314,115.20 and 60,179,920.20 is: 90,269,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,876,076.80 : 100,314,115.20 = 60,179,920.20 : x
  2. Step 2: Convert to fraction form
    66,876,076.80/100,314,115.20 = 60,179,920.20/x
  3. Step 3: Cross multiply
    66,876,076.80x = 100,314,115.20 × 60,179,920.20
  4. Step 4: Simplify right side
    66,876,076.80x = 6,036,895,447,669,608
  5. Step 5: Solve for x
    x = 6,036,895,447,669,608/66,876,076.80
  6. Step 6: Final answer
    x = 90,269,880.30

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1.5x scale

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.