Home / 71,007.20-97,989.81-39,176

Finding the Fourth Proportional to 71,007.20, 97,989.81 and 39,176

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Solution

The fourth proportional to 71,007.20, 97,989.81 and 39,176 is: 54,062.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,007.20 : 97,989.81 = 39,176 : x
  2. Step 2: Convert to fraction form
    71,007.20/97,989.81 = 39,176/x
  3. Step 3: Cross multiply
    71,007.20x = 97,989.81 × 39,176
  4. Step 4: Simplify right side
    71,007.20x = 3,838,848,796.56
  5. Step 5: Solve for x
    x = 3,838,848,796.56/71,007.20
  6. Step 6: Final answer
    x = 54,062.81

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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.