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Finding the Fourth Proportional to 72,349.81, 108,591.32 and 36,836.51

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Solution

The fourth proportional to 72,349.81, 108,591.32 and 36,836.51 is: 55,288.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,349.81 : 108,591.32 = 36,836.51 : x
  2. Step 2: Convert to fraction form
    72,349.81/108,591.32 = 36,836.51/x
  3. Step 3: Cross multiply
    72,349.81x = 108,591.32 × 36,836.51
  4. Step 4: Simplify right side
    72,349.81x = 4,000,124,587.02
  5. Step 5: Solve for x
    x = 4,000,124,587.02/72,349.81
  6. Step 6: Final answer
    x = 55,288.67

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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.