Home / 69,648.21-96,120.48-39,438.86

Finding the Fourth Proportional to 69,648.21, 96,120.48 and 39,438.86

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Solution

The fourth proportional to 69,648.21, 96,120.48 and 39,438.86 is: 54,428.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,648.21 : 96,120.48 = 39,438.86 : x
  2. Step 2: Convert to fraction form
    69,648.21/96,120.48 = 39,438.86/x
  3. Step 3: Cross multiply
    69,648.21x = 96,120.48 × 39,438.86
  4. Step 4: Simplify right side
    69,648.21x = 3,790,881,673.25
  5. Step 5: Solve for x
    x = 3,790,881,673.25/69,648.21
  6. Step 6: Final answer
    x = 54,428.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.