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Finding the Fourth Proportional to 70,469.60, 105,703.92 and 17,160.93

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Solution

The fourth proportional to 70,469.60, 105,703.92 and 17,160.93 is: 25,741.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,469.60 : 105,703.92 = 17,160.93 : x
  2. Step 2: Convert to fraction form
    70,469.60/105,703.92 = 17,160.93/x
  3. Step 3: Cross multiply
    70,469.60x = 105,703.92 × 17,160.93
  4. Step 4: Simplify right side
    70,469.60x = 1,813,977,571.85
  5. Step 5: Solve for x
    x = 1,813,977,571.85/70,469.60
  6. Step 6: Final answer
    x = 25,741.28

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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.