Home / 78,119.41-107,819.94-51,261.03

Finding the Fourth Proportional to 78,119.41, 107,819.94 and 51,261.03

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Solution

The fourth proportional to 78,119.41, 107,819.94 and 51,261.03 is: 70,750.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,119.41 : 107,819.94 = 51,261.03 : x
  2. Step 2: Convert to fraction form
    78,119.41/107,819.94 = 51,261.03/x
  3. Step 3: Cross multiply
    78,119.41x = 107,819.94 × 51,261.03
  4. Step 4: Simplify right side
    78,119.41x = 5,526,961,178.94
  5. Step 5: Solve for x
    x = 5,526,961,178.94/78,119.41
  6. Step 6: Final answer
    x = 70,750.17

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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.