Home / 66,122.40-99,198.60-21,749.52

Finding the Fourth Proportional to 66,122.40, 99,198.60 and 21,749.52

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Solution

The fourth proportional to 66,122.40, 99,198.60 and 21,749.52 is: 32,629.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,122.40 : 99,198.60 = 21,749.52 : x
  2. Step 2: Convert to fraction form
    66,122.40/99,198.60 = 21,749.52/x
  3. Step 3: Cross multiply
    66,122.40x = 99,198.60 × 21,749.52
  4. Step 4: Simplify right side
    66,122.40x = 2,157,521,934.67
  5. Step 5: Solve for x
    x = 2,157,521,934.67/66,122.40
  6. Step 6: Final answer
    x = 32,629.21

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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.