Home / 81,074.12-111,912.93-63,801.68

Finding the Fourth Proportional to 81,074.12, 111,912.93 and 63,801.68

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Solution

The fourth proportional to 81,074.12, 111,912.93 and 63,801.68 is: 88,070.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,074.12 : 111,912.93 = 63,801.68 : x
  2. Step 2: Convert to fraction form
    81,074.12/111,912.93 = 63,801.68/x
  3. Step 3: Cross multiply
    81,074.12x = 111,912.93 × 63,801.68
  4. Step 4: Simplify right side
    81,074.12x = 7,140,232,947.72
  5. Step 5: Solve for x
    x = 7,140,232,947.72/81,074.12
  6. Step 6: Final answer
    x = 88,070.43

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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.