Home / 81,259.12-121,891.36-27,950.56

Finding the Fourth Proportional to 81,259.12, 121,891.36 and 27,950.56

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Solution

The fourth proportional to 81,259.12, 121,891.36 and 27,950.56 is: 41,926.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,259.12 : 121,891.36 = 27,950.56 : x
  2. Step 2: Convert to fraction form
    81,259.12/121,891.36 = 27,950.56/x
  3. Step 3: Cross multiply
    81,259.12x = 121,891.36 × 27,950.56
  4. Step 4: Simplify right side
    81,259.12x = 3,406,931,771.16
  5. Step 5: Solve for x
    x = 3,406,931,771.16/81,259.12
  6. Step 6: Final answer
    x = 41,926.76

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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.