Home / 81,307.06-121,930.27-27,984.13

Finding the Fourth Proportional to 81,307.06, 121,930.27 and 27,984.13

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Solution

The fourth proportional to 81,307.06, 121,930.27 and 27,984.13 is: 41,965.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,307.06 : 121,930.27 = 27,984.13 : x
  2. Step 2: Convert to fraction form
    81,307.06/121,930.27 = 27,984.13/x
  3. Step 3: Cross multiply
    81,307.06x = 121,930.27 × 27,984.13
  4. Step 4: Simplify right side
    81,307.06x = 3,412,112,526.62
  5. Step 5: Solve for x
    x = 3,412,112,526.62/81,307.06
  6. Step 6: Final answer
    x = 41,965.76

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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.