Home / 215,781.80-323,670.94-66,021.48

Finding the Fourth Proportional to 215,781.80, 323,670.94 and 66,021.48

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Solution

The fourth proportional to 215,781.80, 323,670.94 and 66,021.48 is: 99,031.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,781.80 : 323,670.94 = 66,021.48 : x
  2. Step 2: Convert to fraction form
    215,781.80/323,670.94 = 66,021.48/x
  3. Step 3: Cross multiply
    215,781.80x = 323,670.94 × 66,021.48
  4. Step 4: Simplify right side
    215,781.80x = 21,369,234,491.79
  5. Step 5: Solve for x
    x = 21,369,234,491.79/215,781.80
  6. Step 6: Final answer
    x = 99,031.68

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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.