Home / 82,429.20-123,546.60-61,628.40

Finding the Fourth Proportional to 82,429.20, 123,546.60 and 61,628.40

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Solution

The fourth proportional to 82,429.20, 123,546.60 and 61,628.40 is: 92,369.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,429.20 : 123,546.60 = 61,628.40 : x
  2. Step 2: Convert to fraction form
    82,429.20/123,546.60 = 61,628.40/x
  3. Step 3: Cross multiply
    82,429.20x = 123,546.60 × 61,628.40
  4. Step 4: Simplify right side
    82,429.20x = 7,613,979,283.44
  5. Step 5: Solve for x
    x = 7,613,979,283.44/82,429.20
  6. Step 6: Final answer
    x = 92,369.93

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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.