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Finding the Fourth Proportional to 77,099.36, 115,570.26 and 43,748.98

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Solution

The fourth proportional to 77,099.36, 115,570.26 and 43,748.98 is: 65,578.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,099.36 : 115,570.26 = 43,748.98 : x
  2. Step 2: Convert to fraction form
    77,099.36/115,570.26 = 43,748.98/x
  3. Step 3: Cross multiply
    77,099.36x = 115,570.26 × 43,748.98
  4. Step 4: Simplify right side
    77,099.36x = 5,056,080,993.33
  5. Step 5: Solve for x
    x = 5,056,080,993.33/77,099.36
  6. Step 6: Final answer
    x = 65,578.77

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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.