Home / 81,438.42-122,236.47-39,348.12

Finding the Fourth Proportional to 81,438.42, 122,236.47 and 39,348.12

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Solution

The fourth proportional to 81,438.42, 122,236.47 and 39,348.12 is: 59,060.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,438.42 : 122,236.47 = 39,348.12 : x
  2. Step 2: Convert to fraction form
    81,438.42/122,236.47 = 39,348.12/x
  3. Step 3: Cross multiply
    81,438.42x = 122,236.47 × 39,348.12
  4. Step 4: Simplify right side
    81,438.42x = 4,809,775,289.94
  5. Step 5: Solve for x
    x = 4,809,775,289.94/81,438.42
  6. Step 6: Final answer
    x = 59,060.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.