Home / 91,003,540.80-136,505,311.20-39,985,204.80

Finding the Fourth Proportional to 91,003,540.80, 136,505,311.20 and 39,985,204.80

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Solution

The fourth proportional to 91,003,540.80, 136,505,311.20 and 39,985,204.80 is: 59,977,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,003,540.80 : 136,505,311.20 = 39,985,204.80 : x
  2. Step 2: Convert to fraction form
    91,003,540.80/136,505,311.20 = 39,985,204.80/x
  3. Step 3: Cross multiply
    91,003,540.80x = 136,505,311.20 × 39,985,204.80
  4. Step 4: Simplify right side
    91,003,540.80x = 5,458,192,824,619,733
  5. Step 5: Solve for x
    x = 5,458,192,824,619,733/91,003,540.80
  6. Step 6: Final answer
    x = 59,977,807.20

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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.