Home / 66,257.72-99,377.20-21,282.99

Finding the Fourth Proportional to 66,257.72, 99,377.20 and 21,282.99

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Solution

The fourth proportional to 66,257.72, 99,377.20 and 21,282.99 is: 31,921.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,257.72 : 99,377.20 = 21,282.99 : x
  2. Step 2: Convert to fraction form
    66,257.72/99,377.20 = 21,282.99/x
  3. Step 3: Cross multiply
    66,257.72x = 99,377.20 × 21,282.99
  4. Step 4: Simplify right side
    66,257.72x = 2,115,043,953.83
  5. Step 5: Solve for x
    x = 2,115,043,953.83/66,257.72
  6. Step 6: Final answer
    x = 31,921.47

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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.