Home / 81,618.84-122,429.34-46,516.68

Finding the Fourth Proportional to 81,618.84, 122,429.34 and 46,516.68

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Solution

The fourth proportional to 81,618.84, 122,429.34 and 46,516.68 is: 69,775.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,618.84 : 122,429.34 = 46,516.68 : x
  2. Step 2: Convert to fraction form
    81,618.84/122,429.34 = 46,516.68/x
  3. Step 3: Cross multiply
    81,618.84x = 122,429.34 × 46,516.68
  4. Step 4: Simplify right side
    81,618.84x = 5,695,006,431.39
  5. Step 5: Solve for x
    x = 5,695,006,431.39/81,618.84
  6. Step 6: Final answer
    x = 69,775.64

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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.