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Finding the Fourth Proportional to 72,099.38, 107,998.25 and 57,982.97

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Solution

The fourth proportional to 72,099.38, 107,998.25 and 57,982.97 is: 86,853.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,099.38 : 107,998.25 = 57,982.97 : x
  2. Step 2: Convert to fraction form
    72,099.38/107,998.25 = 57,982.97/x
  3. Step 3: Cross multiply
    72,099.38x = 107,998.25 × 57,982.97
  4. Step 4: Simplify right side
    72,099.38x = 6,262,058,894.77
  5. Step 5: Solve for x
    x = 6,262,058,894.77/72,099.38
  6. Step 6: Final answer
    x = 86,853.16

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1.5x scale

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.