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Finding the Fourth Proportional to 81,649.57, 122,482.06 and 31,733.49

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Solution

The fourth proportional to 81,649.57, 122,482.06 and 31,733.49 is: 47,603.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,649.57 : 122,482.06 = 31,733.49 : x
  2. Step 2: Convert to fraction form
    81,649.57/122,482.06 = 31,733.49/x
  3. Step 3: Cross multiply
    81,649.57x = 122,482.06 × 31,733.49
  4. Step 4: Simplify right side
    81,649.57x = 3,886,783,305.52
  5. Step 5: Solve for x
    x = 3,886,783,305.52/81,649.57
  6. Step 6: Final answer
    x = 47,603.23

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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.