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Finding the Fourth Proportional to 36,188.64, 54,271.44 and 15,128.64

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Solution

The fourth proportional to 36,188.64, 54,271.44 and 15,128.64 is: 22,688.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,188.64 : 54,271.44 = 15,128.64 : x
  2. Step 2: Convert to fraction form
    36,188.64/54,271.44 = 15,128.64/x
  3. Step 3: Cross multiply
    36,188.64x = 54,271.44 × 15,128.64
  4. Step 4: Simplify right side
    36,188.64x = 821,053,078.04
  5. Step 5: Solve for x
    x = 821,053,078.04/36,188.64
  6. Step 6: Final answer
    x = 22,688.14

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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.