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Finding the Fourth Proportional to 70,750.13, 105,991.40 and 41,812.40

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Solution

The fourth proportional to 70,750.13, 105,991.40 and 41,812.40 is: 62,639.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,750.13 : 105,991.40 = 41,812.40 : x
  2. Step 2: Convert to fraction form
    70,750.13/105,991.40 = 41,812.40/x
  3. Step 3: Cross multiply
    70,750.13x = 105,991.40 × 41,812.40
  4. Step 4: Simplify right side
    70,750.13x = 4,431,755,182.87
  5. Step 5: Solve for x
    x = 4,431,755,182.87/70,750.13
  6. Step 6: Final answer
    x = 62,639.54

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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.