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Finding the Fourth Proportional to 78,583.36, 108,441.72 and 42,773.44

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Solution

The fourth proportional to 78,583.36, 108,441.72 and 42,773.44 is: 59,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,583.36 : 108,441.72 = 42,773.44 : x
  2. Step 2: Convert to fraction form
    78,583.36/108,441.72 = 42,773.44/x
  3. Step 3: Cross multiply
    78,583.36x = 108,441.72 × 42,773.44
  4. Step 4: Simplify right side
    78,583.36x = 4,638,425,403.92
  5. Step 5: Solve for x
    x = 4,638,425,403.92/78,583.36
  6. Step 6: Final answer
    x = 59,025.54

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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.