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Finding the Fourth Proportional to 68,399.77, 94,430.94 and 52,139.42

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Solution

The fourth proportional to 68,399.77, 94,430.94 and 52,139.42 is: 71,982.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,399.77 : 94,430.94 = 52,139.42 : x
  2. Step 2: Convert to fraction form
    68,399.77/94,430.94 = 52,139.42/x
  3. Step 3: Cross multiply
    68,399.77x = 94,430.94 × 52,139.42
  4. Step 4: Simplify right side
    68,399.77x = 4,923,574,441.65
  5. Step 5: Solve for x
    x = 4,923,574,441.65/68,399.77
  6. Step 6: Final answer
    x = 71,982.32

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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.