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Finding the Fourth Proportional to 66,642.31, 99,952.65 and 22,268.99

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Solution

The fourth proportional to 66,642.31, 99,952.65 and 22,268.99 is: 33,399.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,642.31 : 99,952.65 = 22,268.99 : x
  2. Step 2: Convert to fraction form
    66,642.31/99,952.65 = 22,268.99/x
  3. Step 3: Cross multiply
    66,642.31x = 99,952.65 × 22,268.99
  4. Step 4: Simplify right side
    66,642.31x = 2,225,844,813.21
  5. Step 5: Solve for x
    x = 2,225,844,813.21/66,642.31
  6. Step 6: Final answer
    x = 33,399.87

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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.