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Finding the Fourth Proportional to 85,242.56, 127,869.68 and 29,068

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Solution

The fourth proportional to 85,242.56, 127,869.68 and 29,068 is: 43,603.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,242.56 : 127,869.68 = 29,068 : x
  2. Step 2: Convert to fraction form
    85,242.56/127,869.68 = 29,068/x
  3. Step 3: Cross multiply
    85,242.56x = 127,869.68 × 29,068
  4. Step 4: Simplify right side
    85,242.56x = 3,716,915,858.24
  5. Step 5: Solve for x
    x = 3,716,915,858.24/85,242.56
  6. Step 6: Final answer
    x = 43,603.99

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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.