Home / 215,765.11-323,635.92-66,005.40

Finding the Fourth Proportional to 215,765.11, 323,635.92 and 66,005.40

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Solution

The fourth proportional to 215,765.11, 323,635.92 and 66,005.40 is: 99,004.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,765.11 : 323,635.92 = 66,005.40 : x
  2. Step 2: Convert to fraction form
    215,765.11/323,635.92 = 66,005.40/x
  3. Step 3: Cross multiply
    215,765.11x = 323,635.92 × 66,005.40
  4. Step 4: Simplify right side
    215,765.11x = 21,361,717,146.32
  5. Step 5: Solve for x
    x = 21,361,717,146.32/215,765.11
  6. Step 6: Final answer
    x = 99,004.50

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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.