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Finding the Fourth Proportional to 81,146.52, 112,013.44 and 72,633.62

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Solution

The fourth proportional to 81,146.52, 112,013.44 and 72,633.62 is: 100,262.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,146.52 : 112,013.44 = 72,633.62 : x
  2. Step 2: Convert to fraction form
    81,146.52/112,013.44 = 72,633.62/x
  3. Step 3: Cross multiply
    81,146.52x = 112,013.44 × 72,633.62
  4. Step 4: Simplify right side
    81,146.52x = 8,135,941,722.82
  5. Step 5: Solve for x
    x = 8,135,941,722.82/81,146.52
  6. Step 6: Final answer
    x = 100,262.37

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1.5x scale

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.