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Finding the Fourth Proportional to 72,286.56, 108,352.08 and 47,247.84

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Solution

The fourth proportional to 72,286.56, 108,352.08 and 47,247.84 is: 70,820.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,286.56 : 108,352.08 = 47,247.84 : x
  2. Step 2: Convert to fraction form
    72,286.56/108,352.08 = 47,247.84/x
  3. Step 3: Cross multiply
    72,286.56x = 108,352.08 × 47,247.84
  4. Step 4: Simplify right side
    72,286.56x = 5,119,401,739.51
  5. Step 5: Solve for x
    x = 5,119,401,739.51/72,286.56
  6. Step 6: Final answer
    x = 70,820.93

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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.