Home / 51,021.09-76,545-19,431.90

Finding the Fourth Proportional to 51,021.09, 76,545 and 19,431.90

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Solution

The fourth proportional to 51,021.09, 76,545 and 19,431.90 is: 29,152.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,021.09 : 76,545 = 19,431.90 : x
  2. Step 2: Convert to fraction form
    51,021.09/76,545 = 19,431.90/x
  3. Step 3: Cross multiply
    51,021.09x = 76,545 × 19,431.90
  4. Step 4: Simplify right side
    51,021.09x = 1,487,414,785.50
  5. Step 5: Solve for x
    x = 1,487,414,785.50/51,021.09
  6. Step 6: Final answer
    x = 29,152.94

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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.