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Finding the Fourth Proportional to 69,661.86, 96,133.73 and 39,453.06

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Solution

The fourth proportional to 69,661.86, 96,133.73 and 39,453.06 is: 54,445.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,661.86 : 96,133.73 = 39,453.06 : x
  2. Step 2: Convert to fraction form
    69,661.86/96,133.73 = 39,453.06/x
  3. Step 3: Cross multiply
    69,661.86x = 96,133.73 × 39,453.06
  4. Step 4: Simplify right side
    69,661.86x = 3,792,769,817.71
  5. Step 5: Solve for x
    x = 3,792,769,817.71/69,661.86
  6. Step 6: Final answer
    x = 54,445.43

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1.5x scale

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.