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Finding the Fourth Proportional to 79,325.40, 118,957.23 and 39,855

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Solution

The fourth proportional to 79,325.40, 118,957.23 and 39,855 is: 59,766.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,325.40 : 118,957.23 = 39,855 : x
  2. Step 2: Convert to fraction form
    79,325.40/118,957.23 = 39,855/x
  3. Step 3: Cross multiply
    79,325.40x = 118,957.23 × 39,855
  4. Step 4: Simplify right side
    79,325.40x = 4,741,040,401.65
  5. Step 5: Solve for x
    x = 4,741,040,401.65/79,325.40
  6. Step 6: Final answer
    x = 59,766.99

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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.