Home / 84,234.70-126,309.79-28,055.06

Finding the Fourth Proportional to 84,234.70, 126,309.79 and 28,055.06

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Solution

The fourth proportional to 84,234.70, 126,309.79 and 28,055.06 is: 42,068.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,234.70 : 126,309.79 = 28,055.06 : x
  2. Step 2: Convert to fraction form
    84,234.70/126,309.79 = 28,055.06/x
  3. Step 3: Cross multiply
    84,234.70x = 126,309.79 × 28,055.06
  4. Step 4: Simplify right side
    84,234.70x = 3,543,628,035.35
  5. Step 5: Solve for x
    x = 3,543,628,035.35/84,234.70
  6. Step 6: Final answer
    x = 42,068.51

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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.