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Finding the Fourth Proportional to 66,858,964.80, 100,301,034.72 and 47,642,049.60

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Solution

The fourth proportional to 66,858,964.80, 100,301,034.72 and 47,642,049.60 is: 71,472,043.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,858,964.80 : 100,301,034.72 = 47,642,049.60 : x
  2. Step 2: Convert to fraction form
    66,858,964.80/100,301,034.72 = 47,642,049.60/x
  3. Step 3: Cross multiply
    66,858,964.80x = 100,301,034.72 × 47,642,049.60
  4. Step 4: Simplify right side
    66,858,964.80x = 4,778,546,871,061,562
  5. Step 5: Solve for x
    x = 4,778,546,871,061,562/66,858,964.80
  6. Step 6: Final answer
    x = 71,472,043.96

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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.