Home / 72,735.64-109,091.06-20,132.80

Finding the Fourth Proportional to 72,735.64, 109,091.06 and 20,132.80

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Solution

The fourth proportional to 72,735.64, 109,091.06 and 20,132.80 is: 30,195.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,735.64 : 109,091.06 = 20,132.80 : x
  2. Step 2: Convert to fraction form
    72,735.64/109,091.06 = 20,132.80/x
  3. Step 3: Cross multiply
    72,735.64x = 109,091.06 × 20,132.80
  4. Step 4: Simplify right side
    72,735.64x = 2,196,308,492.77
  5. Step 5: Solve for x
    x = 2,196,308,492.77/72,735.64
  6. Step 6: Final answer
    x = 30,195.77

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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.