Home / 81,020.73-121,574.82-39,467.73

Finding the Fourth Proportional to 81,020.73, 121,574.82 and 39,467.73

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Solution

The fourth proportional to 81,020.73, 121,574.82 and 39,467.73 is: 59,222.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,020.73 : 121,574.82 = 39,467.73 : x
  2. Step 2: Convert to fraction form
    81,020.73/121,574.82 = 39,467.73/x
  3. Step 3: Cross multiply
    81,020.73x = 121,574.82 × 39,467.73
  4. Step 4: Simplify right side
    81,020.73x = 4,798,282,170.56
  5. Step 5: Solve for x
    x = 4,798,282,170.56/81,020.73
  6. Step 6: Final answer
    x = 59,222.89

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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.