Home / 46,103.40-69,120-21,150.54

Finding the Fourth Proportional to 46,103.40, 69,120 and 21,150.54

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Solution

The fourth proportional to 46,103.40, 69,120 and 21,150.54 is: 31,709.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,103.40 : 69,120 = 21,150.54 : x
  2. Step 2: Convert to fraction form
    46,103.40/69,120 = 21,150.54/x
  3. Step 3: Cross multiply
    46,103.40x = 69,120 × 21,150.54
  4. Step 4: Simplify right side
    46,103.40x = 1,461,925,324.80
  5. Step 5: Solve for x
    x = 1,461,925,324.80/46,103.40
  6. Step 6: Final answer
    x = 31,709.71

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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.