Home / 51,138.63-76,739.89-19,551.36

Finding the Fourth Proportional to 51,138.63, 76,739.89 and 19,551.36

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Solution

The fourth proportional to 51,138.63, 76,739.89 and 19,551.36 is: 29,339.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,138.63 : 76,739.89 = 19,551.36 : x
  2. Step 2: Convert to fraction form
    51,138.63/76,739.89 = 19,551.36/x
  3. Step 3: Cross multiply
    51,138.63x = 76,739.89 × 19,551.36
  4. Step 4: Simplify right side
    51,138.63x = 1,500,369,166.87
  5. Step 5: Solve for x
    x = 1,500,369,166.87/51,138.63
  6. Step 6: Final answer
    x = 29,339.25

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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.