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Finding the Fourth Proportional to 85,148.72, 127,721.70 and 29,027.93

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Solution

The fourth proportional to 85,148.72, 127,721.70 and 29,027.93 is: 43,541.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,148.72 : 127,721.70 = 29,027.93 : x
  2. Step 2: Convert to fraction form
    85,148.72/127,721.70 = 29,027.93/x
  3. Step 3: Cross multiply
    85,148.72x = 127,721.70 × 29,027.93
  4. Step 4: Simplify right side
    85,148.72x = 3,707,496,567.08
  5. Step 5: Solve for x
    x = 3,707,496,567.08/85,148.72
  6. Step 6: Final answer
    x = 43,541.42

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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.