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Finding the Fourth Proportional to 82,406.07, 123,407.51 and 74,418.89

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Solution

The fourth proportional to 82,406.07, 123,407.51 and 74,418.89 is: 111,446.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,406.07 : 123,407.51 = 74,418.89 : x
  2. Step 2: Convert to fraction form
    82,406.07/123,407.51 = 74,418.89/x
  3. Step 3: Cross multiply
    82,406.07x = 123,407.51 × 74,418.89
  4. Step 4: Simplify right side
    82,406.07x = 9,183,848,922.73
  5. Step 5: Solve for x
    x = 9,183,848,922.73/82,406.07
  6. Step 6: Final answer
    x = 111,446.27

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1.5x scale

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.