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Finding the Fourth Proportional to 81,999.94, 113,156.41 and 45,699.45

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Solution

The fourth proportional to 81,999.94, 113,156.41 and 45,699.45 is: 63,063.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,999.94 : 113,156.41 = 45,699.45 : x
  2. Step 2: Convert to fraction form
    81,999.94/113,156.41 = 45,699.45/x
  3. Step 3: Cross multiply
    81,999.94x = 113,156.41 × 45,699.45
  4. Step 4: Simplify right side
    81,999.94x = 5,171,185,700.97
  5. Step 5: Solve for x
    x = 5,171,185,700.97/81,999.94
  6. Step 6: Final answer
    x = 63,063.29

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1.5x scale

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.