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Finding the Fourth Proportional to 81,833.15, 112,982.18 and 73,763.12

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Solution

The fourth proportional to 81,833.15, 112,982.18 and 73,763.12 is: 101,840.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,833.15 : 112,982.18 = 73,763.12 : x
  2. Step 2: Convert to fraction form
    81,833.15/112,982.18 = 73,763.12/x
  3. Step 3: Cross multiply
    81,833.15x = 112,982.18 × 73,763.12
  4. Step 4: Simplify right side
    81,833.15x = 8,333,918,014.84
  5. Step 5: Solve for x
    x = 8,333,918,014.84/81,833.15
  6. Step 6: Final answer
    x = 101,840.36

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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.