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Finding the Fourth Proportional to 101,371.32, 139,879.98 and 58,939.32

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Solution

The fourth proportional to 101,371.32, 139,879.98 and 58,939.32 is: 81,329.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,371.32 : 139,879.98 = 58,939.32 : x
  2. Step 2: Convert to fraction form
    101,371.32/139,879.98 = 58,939.32/x
  3. Step 3: Cross multiply
    101,371.32x = 139,879.98 × 58,939.32
  4. Step 4: Simplify right side
    101,371.32x = 8,244,430,902.81
  5. Step 5: Solve for x
    x = 8,244,430,902.81/101,371.32
  6. Step 6: Final answer
    x = 81,329.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.