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Finding the Fourth Proportional to 72,035.64, 108,081.81 and 36,477.45

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Solution

The fourth proportional to 72,035.64, 108,081.81 and 36,477.45 is: 54,730.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,035.64 : 108,081.81 = 36,477.45 : x
  2. Step 2: Convert to fraction form
    72,035.64/108,081.81 = 36,477.45/x
  3. Step 3: Cross multiply
    72,035.64x = 108,081.81 × 36,477.45
  4. Step 4: Simplify right side
    72,035.64x = 3,942,548,820.18
  5. Step 5: Solve for x
    x = 3,942,548,820.18/72,035.64
  6. Step 6: Final answer
    x = 54,730.53

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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.