Home / 57,091,144.80-78,785,857.78-30,985,662.98

Finding the Fourth Proportional to 57,091,144.80, 78,785,857.78 and 30,985,662.98

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Solution

The fourth proportional to 57,091,144.80, 78,785,857.78 and 30,985,662.98 is: 42,760,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,091,144.80 : 78,785,857.78 = 30,985,662.98 : x
  2. Step 2: Convert to fraction form
    57,091,144.80/78,785,857.78 = 30,985,662.98/x
  3. Step 3: Cross multiply
    57,091,144.80x = 78,785,857.78 × 30,985,662.98
  4. Step 4: Simplify right side
    57,091,144.80x = 2,441,232,036,761,291
  5. Step 5: Solve for x
    x = 2,441,232,036,761,291/57,091,144.80
  6. Step 6: Final answer
    x = 42,760,257.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.