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Finding the Fourth Proportional to 85,568.94, 127,736.06 and 72,297.90

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Solution

The fourth proportional to 85,568.94, 127,736.06 and 72,297.90 is: 107,925.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,568.94 : 127,736.06 = 72,297.90 : x
  2. Step 2: Convert to fraction form
    85,568.94/127,736.06 = 72,297.90/x
  3. Step 3: Cross multiply
    85,568.94x = 127,736.06 × 72,297.90
  4. Step 4: Simplify right side
    85,568.94x = 9,235,048,530.78
  5. Step 5: Solve for x
    x = 9,235,048,530.78/85,568.94
  6. Step 6: Final answer
    x = 107,925.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.