Home / 78,027.85-107,649.30-51,185.26

Finding the Fourth Proportional to 78,027.85, 107,649.30 and 51,185.26

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Solution

The fourth proportional to 78,027.85, 107,649.30 and 51,185.26 is: 70,616.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,027.85 : 107,649.30 = 51,185.26 : x
  2. Step 2: Convert to fraction form
    78,027.85/107,649.30 = 51,185.26/x
  3. Step 3: Cross multiply
    78,027.85x = 107,649.30 × 51,185.26
  4. Step 4: Simplify right side
    78,027.85x = 5,510,057,409.32
  5. Step 5: Solve for x
    x = 5,510,057,409.32/78,027.85
  6. Step 6: Final answer
    x = 70,616.55

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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.