Home / 51,438.24-77,174.64-20,256.48

Finding the Fourth Proportional to 51,438.24, 77,174.64 and 20,256.48

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Solution

The fourth proportional to 51,438.24, 77,174.64 and 20,256.48 is: 30,391.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,438.24 : 77,174.64 = 20,256.48 : x
  2. Step 2: Convert to fraction form
    51,438.24/77,174.64 = 20,256.48/x
  3. Step 3: Cross multiply
    51,438.24x = 77,174.64 × 20,256.48
  4. Step 4: Simplify right side
    51,438.24x = 1,563,286,551.67
  5. Step 5: Solve for x
    x = 1,563,286,551.67/51,438.24
  6. Step 6: Final answer
    x = 30,391.52

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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.