Home / 81,886.81-122,633.38-46,719.85

Finding the Fourth Proportional to 81,886.81, 122,633.38 and 46,719.85

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Solution

The fourth proportional to 81,886.81, 122,633.38 and 46,719.85 is: 69,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,886.81 : 122,633.38 = 46,719.85 : x
  2. Step 2: Convert to fraction form
    81,886.81/122,633.38 = 46,719.85/x
  3. Step 3: Cross multiply
    81,886.81x = 122,633.38 × 46,719.85
  4. Step 4: Simplify right side
    81,886.81x = 5,729,412,884.99
  5. Step 5: Solve for x
    x = 5,729,412,884.99/81,886.81
  6. Step 6: Final answer
    x = 69,967.47

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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.