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Finding the Fourth Proportional to 70,047.36, 96,661.42 and 39,840.03

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Solution

The fourth proportional to 70,047.36, 96,661.42 and 39,840.03 is: 54,977.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,047.36 : 96,661.42 = 39,840.03 : x
  2. Step 2: Convert to fraction form
    70,047.36/96,661.42 = 39,840.03/x
  3. Step 3: Cross multiply
    70,047.36x = 96,661.42 × 39,840.03
  4. Step 4: Simplify right side
    70,047.36x = 3,850,993,773.04
  5. Step 5: Solve for x
    x = 3,850,993,773.04/70,047.36
  6. Step 6: Final answer
    x = 54,977.00

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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.