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Finding the Fourth Proportional to 79,782.21, 119,687.49 and 26,477.37

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Solution

The fourth proportional to 79,782.21, 119,687.49 and 26,477.37 is: 39,720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,782.21 : 119,687.49 = 26,477.37 : x
  2. Step 2: Convert to fraction form
    79,782.21/119,687.49 = 26,477.37/x
  3. Step 3: Cross multiply
    79,782.21x = 119,687.49 × 26,477.37
  4. Step 4: Simplify right side
    79,782.21x = 3,169,009,957.10
  5. Step 5: Solve for x
    x = 3,169,009,957.10/79,782.21
  6. Step 6: Final answer
    x = 39,720.76

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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.