Home / 66,709.85-99,933.27-54,243.95

Finding the Fourth Proportional to 66,709.85, 99,933.27 and 54,243.95

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Solution

The fourth proportional to 66,709.85, 99,933.27 and 54,243.95 is: 81,258.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,709.85 : 99,933.27 = 54,243.95 : x
  2. Step 2: Convert to fraction form
    66,709.85/99,933.27 = 54,243.95/x
  3. Step 3: Cross multiply
    66,709.85x = 99,933.27 × 54,243.95
  4. Step 4: Simplify right side
    66,709.85x = 5,420,774,801.55
  5. Step 5: Solve for x
    x = 5,420,774,801.55/66,709.85
  6. Step 6: Final answer
    x = 81,258.99

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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.