Home / 66,410.15-99,631.82-19,029.20

Finding the Fourth Proportional to 66,410.15, 99,631.82 and 19,029.20

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Solution

The fourth proportional to 66,410.15, 99,631.82 and 19,029.20 is: 28,548.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,410.15 : 99,631.82 = 19,029.20 : x
  2. Step 2: Convert to fraction form
    66,410.15/99,631.82 = 19,029.20/x
  3. Step 3: Cross multiply
    66,410.15x = 99,631.82 × 19,029.20
  4. Step 4: Simplify right side
    66,410.15x = 1,895,913,378.56
  5. Step 5: Solve for x
    x = 1,895,913,378.56/66,410.15
  6. Step 6: Final answer
    x = 28,548.55

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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.