Home / 30,042.09-45,033.70-16,721.45

Finding the Fourth Proportional to 30,042.09, 45,033.70 and 16,721.45

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Solution

The fourth proportional to 30,042.09, 45,033.70 and 16,721.45 is: 25,065.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,042.09 : 45,033.70 = 16,721.45 : x
  2. Step 2: Convert to fraction form
    30,042.09/45,033.70 = 16,721.45/x
  3. Step 3: Cross multiply
    30,042.09x = 45,033.70 × 16,721.45
  4. Step 4: Simplify right side
    30,042.09x = 753,028,762.87
  5. Step 5: Solve for x
    x = 753,028,762.87/30,042.09
  6. Step 6: Final answer
    x = 25,065.79

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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.