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Finding the Fourth Proportional to 85,342.72, 127,936.64 and 29,908.48

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Solution

The fourth proportional to 85,342.72, 127,936.64 and 29,908.48 is: 44,835.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,342.72 : 127,936.64 = 29,908.48 : x
  2. Step 2: Convert to fraction form
    85,342.72/127,936.64 = 29,908.48/x
  3. Step 3: Cross multiply
    85,342.72x = 127,936.64 × 29,908.48
  4. Step 4: Simplify right side
    85,342.72x = 3,826,390,438.71
  5. Step 5: Solve for x
    x = 3,826,390,438.71/85,342.72
  6. Step 6: Final answer
    x = 44,835.58

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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.