Home / 72,686,863.77-100,307,872.62-39,647,111.19

Finding the Fourth Proportional to 72,686,863.77, 100,307,872.62 and 39,647,111.19

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Solution

The fourth proportional to 72,686,863.77, 100,307,872.62 and 39,647,111.19 is: 54,713,013.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,686,863.77 : 100,307,872.62 = 39,647,111.19 : x
  2. Step 2: Convert to fraction form
    72,686,863.77/100,307,872.62 = 39,647,111.19/x
  3. Step 3: Cross multiply
    72,686,863.77x = 100,307,872.62 × 39,647,111.19
  4. Step 4: Simplify right side
    72,686,863.77x = 3,976,917,378,997,496.50
  5. Step 5: Solve for x
    x = 3,976,917,378,997,496.50/72,686,863.77
  6. Step 6: Final answer
    x = 54,713,013.78

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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.