Home / 81,868.82-112,937.62-47,855.08

Finding the Fourth Proportional to 81,868.82, 112,937.62 and 47,855.08

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Solution

The fourth proportional to 81,868.82, 112,937.62 and 47,855.08 is: 66,015.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,868.82 : 112,937.62 = 47,855.08 : x
  2. Step 2: Convert to fraction form
    81,868.82/112,937.62 = 47,855.08/x
  3. Step 3: Cross multiply
    81,868.82x = 112,937.62 × 47,855.08
  4. Step 4: Simplify right side
    81,868.82x = 5,404,638,840.11
  5. Step 5: Solve for x
    x = 5,404,638,840.11/81,868.82
  6. Step 6: Final answer
    x = 66,015.84

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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.