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Finding the Fourth Proportional to 85,087.71, 127,631.53 and 35,112.87

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Solution

The fourth proportional to 85,087.71, 127,631.53 and 35,112.87 is: 52,669.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,087.71 : 127,631.53 = 35,112.87 : x
  2. Step 2: Convert to fraction form
    85,087.71/127,631.53 = 35,112.87/x
  3. Step 3: Cross multiply
    85,087.71x = 127,631.53 × 35,112.87
  4. Step 4: Simplify right side
    85,087.71x = 4,481,509,320.79
  5. Step 5: Solve for x
    x = 4,481,509,320.79/85,087.71
  6. Step 6: Final answer
    x = 52,669.29

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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.