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Finding the Fourth Proportional to 43,480.16, 65,174.88 and 18,532.16

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Solution

The fourth proportional to 43,480.16, 65,174.88 and 18,532.16 is: 27,778.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,480.16 : 65,174.88 = 18,532.16 : x
  2. Step 2: Convert to fraction form
    43,480.16/65,174.88 = 18,532.16/x
  3. Step 3: Cross multiply
    43,480.16x = 65,174.88 × 18,532.16
  4. Step 4: Simplify right side
    43,480.16x = 1,207,831,304.14
  5. Step 5: Solve for x
    x = 1,207,831,304.14/43,480.16
  6. Step 6: Final answer
    x = 27,778.91

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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.