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Finding the Fourth Proportional to 78,804, 108,749.52 and 45,289.44

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Solution

The fourth proportional to 78,804, 108,749.52 and 45,289.44 is: 62,499.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,804 : 108,749.52 = 45,289.44 : x
  2. Step 2: Convert to fraction form
    78,804/108,749.52 = 45,289.44/x
  3. Step 3: Cross multiply
    78,804x = 108,749.52 × 45,289.44
  4. Step 4: Simplify right side
    78,804x = 4,925,204,861.07
  5. Step 5: Solve for x
    x = 4,925,204,861.07/78,804
  6. Step 6: Final answer
    x = 62,499.43

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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.