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Finding the Fourth Proportional to 40,698.78, 61,048.98 and 18,496.68

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Solution

The fourth proportional to 40,698.78, 61,048.98 and 18,496.68 is: 27,745.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,698.78 : 61,048.98 = 18,496.68 : x
  2. Step 2: Convert to fraction form
    40,698.78/61,048.98 = 18,496.68/x
  3. Step 3: Cross multiply
    40,698.78x = 61,048.98 × 18,496.68
  4. Step 4: Simplify right side
    40,698.78x = 1,129,203,447.39
  5. Step 5: Solve for x
    x = 1,129,203,447.39/40,698.78
  6. Step 6: Final answer
    x = 27,745.39

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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.