Home / 54,830.10-82,135.80-31,429.20

Finding the Fourth Proportional to 54,830.10, 82,135.80 and 31,429.20

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Solution

The fourth proportional to 54,830.10, 82,135.80 and 31,429.20 is: 47,081.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,830.10 : 82,135.80 = 31,429.20 : x
  2. Step 2: Convert to fraction form
    54,830.10/82,135.80 = 31,429.20/x
  3. Step 3: Cross multiply
    54,830.10x = 82,135.80 × 31,429.20
  4. Step 4: Simplify right side
    54,830.10x = 2,581,462,485.36
  5. Step 5: Solve for x
    x = 2,581,462,485.36/54,830.10
  6. Step 6: Final answer
    x = 47,081.12

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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.