Home / 66,166.12-99,249.86-19,419.88

Finding the Fourth Proportional to 66,166.12, 99,249.86 and 19,419.88

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Solution

The fourth proportional to 66,166.12, 99,249.86 and 19,419.88 is: 29,130.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,166.12 : 99,249.86 = 19,419.88 : x
  2. Step 2: Convert to fraction form
    66,166.12/99,249.86 = 19,419.88/x
  3. Step 3: Cross multiply
    66,166.12x = 99,249.86 × 19,419.88
  4. Step 4: Simplify right side
    66,166.12x = 1,927,420,371.22
  5. Step 5: Solve for x
    x = 1,927,420,371.22/66,166.12
  6. Step 6: Final answer
    x = 29,130.02

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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.