Home / 66,631.89-99,965.15-19,884.77

Finding the Fourth Proportional to 66,631.89, 99,965.15 and 19,884.77

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Solution

The fourth proportional to 66,631.89, 99,965.15 and 19,884.77 is: 29,832.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,631.89 : 99,965.15 = 19,884.77 : x
  2. Step 2: Convert to fraction form
    66,631.89/99,965.15 = 19,884.77/x
  3. Step 3: Cross multiply
    66,631.89x = 99,965.15 × 19,884.77
  4. Step 4: Simplify right side
    66,631.89x = 1,987,783,815.56
  5. Step 5: Solve for x
    x = 1,987,783,815.56/66,631.89
  6. Step 6: Final answer
    x = 29,832.32

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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.