Home / 81,243,859.73-112,087,105.37-53,381,567.21

Finding the Fourth Proportional to 81,243,859.73, 112,087,105.37 and 53,381,567.21

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Solution

The fourth proportional to 81,243,859.73, 112,087,105.37 and 53,381,567.21 is: 73,647,231.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,243,859.73 : 112,087,105.37 = 53,381,567.21 : x
  2. Step 2: Convert to fraction form
    81,243,859.73/112,087,105.37 = 53,381,567.21/x
  3. Step 3: Cross multiply
    81,243,859.73x = 112,087,105.37 × 53,381,567.21
  4. Step 4: Simplify right side
    81,243,859.73x = 5,983,385,348,683,007
  5. Step 5: Solve for x
    x = 5,983,385,348,683,007/81,243,859.73
  6. Step 6: Final answer
    x = 73,647,231.54

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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.