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Finding the Fourth Proportional to 85,574.84, 128,255.34 and 41,189.81

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Solution

The fourth proportional to 85,574.84, 128,255.34 and 41,189.81 is: 61,733.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,574.84 : 128,255.34 = 41,189.81 : x
  2. Step 2: Convert to fraction form
    85,574.84/128,255.34 = 41,189.81/x
  3. Step 3: Cross multiply
    85,574.84x = 128,255.34 × 41,189.81
  4. Step 4: Simplify right side
    85,574.84x = 5,282,813,086.09
  5. Step 5: Solve for x
    x = 5,282,813,086.09/85,574.84
  6. Step 6: Final answer
    x = 61,733.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.