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Finding the Fourth Proportional to 89,648.73, 134,531.42 and 39,761.37

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Solution

The fourth proportional to 89,648.73, 134,531.42 and 39,761.37 is: 59,667.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,648.73 : 134,531.42 = 39,761.37 : x
  2. Step 2: Convert to fraction form
    89,648.73/134,531.42 = 39,761.37/x
  3. Step 3: Cross multiply
    89,648.73x = 134,531.42 × 39,761.37
  4. Step 4: Simplify right side
    89,648.73x = 5,349,153,368.44
  5. Step 5: Solve for x
    x = 5,349,153,368.44/89,648.73
  6. Step 6: Final answer
    x = 59,667.92

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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.