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Finding the Fourth Proportional to 81,837, 112,935.18 and 48,303

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Solution

The fourth proportional to 81,837, 112,935.18 and 48,303 is: 66,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,837 : 112,935.18 = 48,303 : x
  2. Step 2: Convert to fraction form
    81,837/112,935.18 = 48,303/x
  3. Step 3: Cross multiply
    81,837x = 112,935.18 × 48,303
  4. Step 4: Simplify right side
    81,837x = 5,455,107,999.54
  5. Step 5: Solve for x
    x = 5,455,107,999.54/81,837
  6. Step 6: Final answer
    x = 66,658.21

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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.