Home / 84,271.26-126,416.61-28,118.82

Finding the Fourth Proportional to 84,271.26, 126,416.61 and 28,118.82

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Solution

The fourth proportional to 84,271.26, 126,416.61 and 28,118.82 is: 42,181.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,271.26 : 126,416.61 = 28,118.82 : x
  2. Step 2: Convert to fraction form
    84,271.26/126,416.61 = 28,118.82/x
  3. Step 3: Cross multiply
    84,271.26x = 126,416.61 × 28,118.82
  4. Step 4: Simplify right side
    84,271.26x = 3,554,685,128.92
  5. Step 5: Solve for x
    x = 3,554,685,128.92/84,271.26
  6. Step 6: Final answer
    x = 42,181.47

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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.