Home / 215,777.90-323,705.74-66,015.38

Finding the Fourth Proportional to 215,777.90, 323,705.74 and 66,015.38

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Solution

The fourth proportional to 215,777.90, 323,705.74 and 66,015.38 is: 99,034.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,777.90 : 323,705.74 = 66,015.38 : x
  2. Step 2: Convert to fraction form
    215,777.90/323,705.74 = 66,015.38/x
  3. Step 3: Cross multiply
    215,777.90x = 323,705.74 × 66,015.38
  4. Step 4: Simplify right side
    215,777.90x = 21,369,557,434.28
  5. Step 5: Solve for x
    x = 21,369,557,434.28/215,777.90
  6. Step 6: Final answer
    x = 99,034.97

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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.