Home / 82,429.20-113,720.10-53,782.56

Finding the Fourth Proportional to 82,429.20, 113,720.10 and 53,782.56

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Solution

The fourth proportional to 82,429.20, 113,720.10 and 53,782.56 is: 74,198.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,429.20 : 113,720.10 = 53,782.56 : x
  2. Step 2: Convert to fraction form
    82,429.20/113,720.10 = 53,782.56/x
  3. Step 3: Cross multiply
    82,429.20x = 113,720.10 × 53,782.56
  4. Step 4: Simplify right side
    82,429.20x = 6,116,158,101.46
  5. Step 5: Solve for x
    x = 6,116,158,101.46/82,429.20
  6. Step 6: Final answer
    x = 74,198.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.