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Finding the Fourth Proportional to 84,368.67, 126,490.37 and 51,080.81

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Solution

The fourth proportional to 84,368.67, 126,490.37 and 51,080.81 is: 76,583.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,368.67 : 126,490.37 = 51,080.81 : x
  2. Step 2: Convert to fraction form
    84,368.67/126,490.37 = 51,080.81/x
  3. Step 3: Cross multiply
    84,368.67x = 126,490.37 × 51,080.81
  4. Step 4: Simplify right side
    84,368.67x = 6,461,230,556.80
  5. Step 5: Solve for x
    x = 6,461,230,556.80/84,368.67
  6. Step 6: Final answer
    x = 76,583.29

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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.