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Finding the Fourth Proportional to 81,571.84, 112,562.52 and 45,756.88

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Solution

The fourth proportional to 81,571.84, 112,562.52 and 45,756.88 is: 63,140.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,571.84 : 112,562.52 = 45,756.88 : x
  2. Step 2: Convert to fraction form
    81,571.84/112,562.52 = 45,756.88/x
  3. Step 3: Cross multiply
    81,571.84x = 112,562.52 × 45,756.88
  4. Step 4: Simplify right side
    81,571.84x = 5,150,509,720.14
  5. Step 5: Solve for x
    x = 5,150,509,720.14/81,571.84
  6. Step 6: Final answer
    x = 63,140.78

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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.