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Finding the Fourth Proportional to 36,681.60, 55,022.40 and 8,979.60

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Solution

The fourth proportional to 36,681.60, 55,022.40 and 8,979.60 is: 13,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,681.60 : 55,022.40 = 8,979.60 : x
  2. Step 2: Convert to fraction form
    36,681.60/55,022.40 = 8,979.60/x
  3. Step 3: Cross multiply
    36,681.60x = 55,022.40 × 8,979.60
  4. Step 4: Simplify right side
    36,681.60x = 494,079,143.04
  5. Step 5: Solve for x
    x = 494,079,143.04/36,681.60
  6. Step 6: Final answer
    x = 13,469.40

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1.5x scale

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.