Home / 51,857.58-77,782.60-20,261.72

Finding the Fourth Proportional to 51,857.58, 77,782.60 and 20,261.72

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Solution

The fourth proportional to 51,857.58, 77,782.60 and 20,261.72 is: 30,391.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,857.58 : 77,782.60 = 20,261.72 : x
  2. Step 2: Convert to fraction form
    51,857.58/77,782.60 = 20,261.72/x
  3. Step 3: Cross multiply
    51,857.58x = 77,782.60 × 20,261.72
  4. Step 4: Simplify right side
    51,857.58x = 1,576,009,262.07
  5. Step 5: Solve for x
    x = 1,576,009,262.07/51,857.58
  6. Step 6: Final answer
    x = 30,391.11

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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.