Home / 145,048.80-217,578.56-39,876

Finding the Fourth Proportional to 145,048.80, 217,578.56 and 39,876

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Solution

The fourth proportional to 145,048.80, 217,578.56 and 39,876 is: 59,815.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,048.80 : 217,578.56 = 39,876 : x
  2. Step 2: Convert to fraction form
    145,048.80/217,578.56 = 39,876/x
  3. Step 3: Cross multiply
    145,048.80x = 217,578.56 × 39,876
  4. Step 4: Simplify right side
    145,048.80x = 8,676,162,658.56
  5. Step 5: Solve for x
    x = 8,676,162,658.56/145,048.80
  6. Step 6: Final answer
    x = 59,815.47

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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.