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Finding the Fourth Proportional to 43,361.14, 65,009.84 and 19,335.20

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Solution

The fourth proportional to 43,361.14, 65,009.84 and 19,335.20 is: 28,988.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,361.14 : 65,009.84 = 19,335.20 : x
  2. Step 2: Convert to fraction form
    43,361.14/65,009.84 = 19,335.20/x
  3. Step 3: Cross multiply
    43,361.14x = 65,009.84 × 19,335.20
  4. Step 4: Simplify right side
    43,361.14x = 1,256,978,258.37
  5. Step 5: Solve for x
    x = 1,256,978,258.37/43,361.14
  6. Step 6: Final answer
    x = 28,988.59

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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.