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Finding the Fourth Proportional to 70,954.33, 106,218.98 and 68,430.89

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Solution

The fourth proportional to 70,954.33, 106,218.98 and 68,430.89 is: 102,441.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,954.33 : 106,218.98 = 68,430.89 : x
  2. Step 2: Convert to fraction form
    70,954.33/106,218.98 = 68,430.89/x
  3. Step 3: Cross multiply
    70,954.33x = 106,218.98 × 68,430.89
  4. Step 4: Simplify right side
    70,954.33x = 7,268,659,336.29
  5. Step 5: Solve for x
    x = 7,268,659,336.29/70,954.33
  6. Step 6: Final answer
    x = 102,441.38

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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.