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Finding the Fourth Proportional to 79,758.88, 109,977.36 and 51,040.96

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Solution

The fourth proportional to 79,758.88, 109,977.36 and 51,040.96 is: 70,379.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,758.88 : 109,977.36 = 51,040.96 : x
  2. Step 2: Convert to fraction form
    79,758.88/109,977.36 = 51,040.96/x
  3. Step 3: Cross multiply
    79,758.88x = 109,977.36 × 51,040.96
  4. Step 4: Simplify right side
    79,758.88x = 5,613,350,032.67
  5. Step 5: Solve for x
    x = 5,613,350,032.67/79,758.88
  6. Step 6: Final answer
    x = 70,379.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.