Home / 66,519.94-99,796.38-19,772.68

Finding the Fourth Proportional to 66,519.94, 99,796.38 and 19,772.68

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Solution

The fourth proportional to 66,519.94, 99,796.38 and 19,772.68 is: 29,663.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,519.94 : 99,796.38 = 19,772.68 : x
  2. Step 2: Convert to fraction form
    66,519.94/99,796.38 = 19,772.68/x
  3. Step 3: Cross multiply
    66,519.94x = 99,796.38 × 19,772.68
  4. Step 4: Simplify right side
    66,519.94x = 1,973,241,886.90
  5. Step 5: Solve for x
    x = 1,973,241,886.90/66,519.94
  6. Step 6: Final answer
    x = 29,663.92

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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.