Home / 84,328.62-126,478.58-28,162.36

Finding the Fourth Proportional to 84,328.62, 126,478.58 and 28,162.36

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Solution

The fourth proportional to 84,328.62, 126,478.58 and 28,162.36 is: 42,238.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,328.62 : 126,478.58 = 28,162.36 : x
  2. Step 2: Convert to fraction form
    84,328.62/126,478.58 = 28,162.36/x
  3. Step 3: Cross multiply
    84,328.62x = 126,478.58 × 28,162.36
  4. Step 4: Simplify right side
    84,328.62x = 3,561,935,302.25
  5. Step 5: Solve for x
    x = 3,561,935,302.25/84,328.62
  6. Step 6: Final answer
    x = 42,238.75

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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.