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Finding the Fourth Proportional to 66,059,905.80, 99,089,858.70 and 52,455,016.20

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Solution

The fourth proportional to 66,059,905.80, 99,089,858.70 and 52,455,016.20 is: 78,682,524.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,059,905.80 : 99,089,858.70 = 52,455,016.20 : x
  2. Step 2: Convert to fraction form
    66,059,905.80/99,089,858.70 = 52,455,016.20/x
  3. Step 3: Cross multiply
    66,059,905.80x = 99,089,858.70 × 52,455,016.20
  4. Step 4: Simplify right side
    66,059,905.80x = 5,197,760,143,364,211
  5. Step 5: Solve for x
    x = 5,197,760,143,364,211/66,059,905.80
  6. Step 6: Final answer
    x = 78,682,524.30

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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.