Home / 259,005.75-388,530.63-72,017.25

Finding the Fourth Proportional to 259,005.75, 388,530.63 and 72,017.25

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Solution

The fourth proportional to 259,005.75, 388,530.63 and 72,017.25 is: 108,031.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,005.75 : 388,530.63 = 72,017.25 : x
  2. Step 2: Convert to fraction form
    259,005.75/388,530.63 = 72,017.25/x
  3. Step 3: Cross multiply
    259,005.75x = 388,530.63 × 72,017.25
  4. Step 4: Simplify right side
    259,005.75x = 27,980,907,513.37
  5. Step 5: Solve for x
    x = 27,980,907,513.37/259,005.75
  6. Step 6: Final answer
    x = 108,031.99

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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.