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Finding the Fourth Proportional to 70,541.37, 105,673.59 and 40,896.90

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Solution

The fourth proportional to 70,541.37, 105,673.59 and 40,896.90 is: 61,265.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,541.37 : 105,673.59 = 40,896.90 : x
  2. Step 2: Convert to fraction form
    70,541.37/105,673.59 = 40,896.90/x
  3. Step 3: Cross multiply
    70,541.37x = 105,673.59 × 40,896.90
  4. Step 4: Simplify right side
    70,541.37x = 4,321,722,242.87
  5. Step 5: Solve for x
    x = 4,321,722,242.87/70,541.37
  6. Step 6: Final answer
    x = 61,265.07

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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.