Home / 85,212,005.40-127,818,008.10-54,601,003.80

Finding the Fourth Proportional to 85,212,005.40, 127,818,008.10 and 54,601,003.80

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Solution

The fourth proportional to 85,212,005.40, 127,818,008.10 and 54,601,003.80 is: 81,901,505.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,212,005.40 : 127,818,008.10 = 54,601,003.80 : x
  2. Step 2: Convert to fraction form
    85,212,005.40/127,818,008.10 = 54,601,003.80/x
  3. Step 3: Cross multiply
    85,212,005.40x = 127,818,008.10 × 54,601,003.80
  4. Step 4: Simplify right side
    85,212,005.40x = 6,978,991,545,976,530
  5. Step 5: Solve for x
    x = 6,978,991,545,976,530/85,212,005.40
  6. Step 6: Final answer
    x = 81,901,505.70

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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.