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Finding the Fourth Proportional to 54,859.85, 82,289.78 and 13,306.85

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Solution

The fourth proportional to 54,859.85, 82,289.78 and 13,306.85 is: 19,960.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,859.85 : 82,289.78 = 13,306.85 : x
  2. Step 2: Convert to fraction form
    54,859.85/82,289.78 = 13,306.85/x
  3. Step 3: Cross multiply
    54,859.85x = 82,289.78 × 13,306.85
  4. Step 4: Simplify right side
    54,859.85x = 1,095,017,758.99
  5. Step 5: Solve for x
    x = 1,095,017,758.99/54,859.85
  6. Step 6: Final answer
    x = 19,960.28

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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.