Home / 81,107.94-121,666.77-38,996.58

Finding the Fourth Proportional to 81,107.94, 121,666.77 and 38,996.58

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Solution

The fourth proportional to 81,107.94, 121,666.77 and 38,996.58 is: 58,497.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,107.94 : 121,666.77 = 38,996.58 : x
  2. Step 2: Convert to fraction form
    81,107.94/121,666.77 = 38,996.58/x
  3. Step 3: Cross multiply
    81,107.94x = 121,666.77 × 38,996.58
  4. Step 4: Simplify right side
    81,107.94x = 4,744,587,929.65
  5. Step 5: Solve for x
    x = 4,744,587,929.65/81,107.94
  6. Step 6: Final answer
    x = 58,497.21

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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.