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Finding the Fourth Proportional to 53,638.40, 80,096.40 and 43,796.88

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Solution

The fourth proportional to 53,638.40, 80,096.40 and 43,796.88 is: 65,400.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,638.40 : 80,096.40 = 43,796.88 : x
  2. Step 2: Convert to fraction form
    53,638.40/80,096.40 = 43,796.88/x
  3. Step 3: Cross multiply
    53,638.40x = 80,096.40 × 43,796.88
  4. Step 4: Simplify right side
    53,638.40x = 3,507,972,419.23
  5. Step 5: Solve for x
    x = 3,507,972,419.23/53,638.40
  6. Step 6: Final answer
    x = 65,400.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.