Home / 81,933.13-122,929.13-28,632.84

Finding the Fourth Proportional to 81,933.13, 122,929.13 and 28,632.84

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Solution

The fourth proportional to 81,933.13, 122,929.13 and 28,632.84 is: 42,959.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,933.13 : 122,929.13 = 28,632.84 : x
  2. Step 2: Convert to fraction form
    81,933.13/122,929.13 = 28,632.84/x
  3. Step 3: Cross multiply
    81,933.13x = 122,929.13 × 28,632.84
  4. Step 4: Simplify right side
    81,933.13x = 3,519,810,110.63
  5. Step 5: Solve for x
    x = 3,519,810,110.63/81,933.13
  6. Step 6: Final answer
    x = 42,959.55

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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.