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Finding the Fourth Proportional to 81,881.70, 112,998.95 and 46,072.98

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Solution

The fourth proportional to 81,881.70, 112,998.95 and 46,072.98 is: 63,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,881.70 : 112,998.95 = 46,072.98 : x
  2. Step 2: Convert to fraction form
    81,881.70/112,998.95 = 46,072.98/x
  3. Step 3: Cross multiply
    81,881.70x = 112,998.95 × 46,072.98
  4. Step 4: Simplify right side
    81,881.70x = 5,206,198,305.78
  5. Step 5: Solve for x
    x = 5,206,198,305.78/81,881.70
  6. Step 6: Final answer
    x = 63,581.95

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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.