Home / 81,916.74-122,919.24-34,564.64

Finding the Fourth Proportional to 81,916.74, 122,919.24 and 34,564.64

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Solution

The fourth proportional to 81,916.74, 122,919.24 and 34,564.64 is: 51,865.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,916.74 : 122,919.24 = 34,564.64 : x
  2. Step 2: Convert to fraction form
    81,916.74/122,919.24 = 34,564.64/x
  3. Step 3: Cross multiply
    81,916.74x = 122,919.24 × 34,564.64
  4. Step 4: Simplify right side
    81,916.74x = 4,248,658,665.08
  5. Step 5: Solve for x
    x = 4,248,658,665.08/81,916.74
  6. Step 6: Final answer
    x = 51,865.57

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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.