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Finding the Fourth Proportional to 69,729.84, 96,230.70 and 39,520.98

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Solution

The fourth proportional to 69,729.84, 96,230.70 and 39,520.98 is: 54,540.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,729.84 : 96,230.70 = 39,520.98 : x
  2. Step 2: Convert to fraction form
    69,729.84/96,230.70 = 39,520.98/x
  3. Step 3: Cross multiply
    69,729.84x = 96,230.70 × 39,520.98
  4. Step 4: Simplify right side
    69,729.84x = 3,803,131,570.09
  5. Step 5: Solve for x
    x = 3,803,131,570.09/69,729.84
  6. Step 6: Final answer
    x = 54,540.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.