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Finding the Fourth Proportional to 81,212.81, 112,074.39 and 44,912.37

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Solution

The fourth proportional to 81,212.81, 112,074.39 and 44,912.37 is: 61,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,212.81 : 112,074.39 = 44,912.37 : x
  2. Step 2: Convert to fraction form
    81,212.81/112,074.39 = 44,912.37/x
  3. Step 3: Cross multiply
    81,212.81x = 112,074.39 × 44,912.37
  4. Step 4: Simplify right side
    81,212.81x = 5,033,525,686.27
  5. Step 5: Solve for x
    x = 5,033,525,686.27/81,212.81
  6. Step 6: Final answer
    x = 61,979.45

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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.