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Finding the Fourth Proportional to 78,621.75, 108,471.03 and 44,627.67

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Solution

The fourth proportional to 78,621.75, 108,471.03 and 44,627.67 is: 61,570.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,621.75 : 108,471.03 = 44,627.67 : x
  2. Step 2: Convert to fraction form
    78,621.75/108,471.03 = 44,627.67/x
  3. Step 3: Cross multiply
    78,621.75x = 108,471.03 × 44,627.67
  4. Step 4: Simplify right side
    78,621.75x = 4,840,809,331.40
  5. Step 5: Solve for x
    x = 4,840,809,331.40/78,621.75
  6. Step 6: Final answer
    x = 61,570.87

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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.