Home / 72,558,738.38-100,131,060.78-39,963,690.38

Finding the Fourth Proportional to 72,558,738.38, 100,131,060.78 and 39,963,690.38

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Solution

The fourth proportional to 72,558,738.38, 100,131,060.78 and 39,963,690.38 is: 55,149,893.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,558,738.38 : 100,131,060.78 = 39,963,690.38 : x
  2. Step 2: Convert to fraction form
    72,558,738.38/100,131,060.78 = 39,963,690.38/x
  3. Step 3: Cross multiply
    72,558,738.38x = 100,131,060.78 × 39,963,690.38
  4. Step 4: Simplify right side
    72,558,738.38x = 4,001,606,709,932,226
  5. Step 5: Solve for x
    x = 4,001,606,709,932,226/72,558,738.38
  6. Step 6: Final answer
    x = 55,149,893.72

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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.