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Finding the Fourth Proportional to 124,324.79, 186,486.98 and 30,830.54

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Solution

The fourth proportional to 124,324.79, 186,486.98 and 30,830.54 is: 46,245.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,324.79 : 186,486.98 = 30,830.54 : x
  2. Step 2: Convert to fraction form
    124,324.79/186,486.98 = 30,830.54/x
  3. Step 3: Cross multiply
    124,324.79x = 186,486.98 × 30,830.54
  4. Step 4: Simplify right side
    124,324.79x = 5,749,493,209.78
  5. Step 5: Solve for x
    x = 5,749,493,209.78/124,324.79
  6. Step 6: Final answer
    x = 46,245.75

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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.