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Finding the Fourth Proportional to 81,745.56, 112,812.18 and 45,935.46

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Solution

The fourth proportional to 81,745.56, 112,812.18 and 45,935.46 is: 63,392.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,745.56 : 112,812.18 = 45,935.46 : x
  2. Step 2: Convert to fraction form
    81,745.56/112,812.18 = 45,935.46/x
  3. Step 3: Cross multiply
    81,745.56x = 112,812.18 × 45,935.46
  4. Step 4: Simplify right side
    81,745.56x = 5,182,079,381.90
  5. Step 5: Solve for x
    x = 5,182,079,381.90/81,745.56
  6. Step 6: Final answer
    x = 63,392.79

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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.