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Finding the Fourth Proportional to 70,757.56, 97,645.58 and 38,928.43

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Solution

The fourth proportional to 70,757.56, 97,645.58 and 38,928.43 is: 53,721.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,757.56 : 97,645.58 = 38,928.43 : x
  2. Step 2: Convert to fraction form
    70,757.56/97,645.58 = 38,928.43/x
  3. Step 3: Cross multiply
    70,757.56x = 97,645.58 × 38,928.43
  4. Step 4: Simplify right side
    70,757.56x = 3,801,189,125.84
  5. Step 5: Solve for x
    x = 3,801,189,125.84/70,757.56
  6. Step 6: Final answer
    x = 53,721.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.