Home / 81,284.33-121,860.87-74,723.33

Finding the Fourth Proportional to 81,284.33, 121,860.87 and 74,723.33

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Solution

The fourth proportional to 81,284.33, 121,860.87 and 74,723.33 is: 112,024.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,284.33 : 121,860.87 = 74,723.33 : x
  2. Step 2: Convert to fraction form
    81,284.33/121,860.87 = 74,723.33/x
  3. Step 3: Cross multiply
    81,284.33x = 121,860.87 × 74,723.33
  4. Step 4: Simplify right side
    81,284.33x = 9,105,849,393.79
  5. Step 5: Solve for x
    x = 9,105,849,393.79/81,284.33
  6. Step 6: Final answer
    x = 112,024.67

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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.