Home / 39,858.24-55,025.48-30,885.60

Finding the Fourth Proportional to 39,858.24, 55,025.48 and 30,885.60

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Solution

The fourth proportional to 39,858.24, 55,025.48 and 30,885.60 is: 42,638.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,858.24 : 55,025.48 = 30,885.60 : x
  2. Step 2: Convert to fraction form
    39,858.24/55,025.48 = 30,885.60/x
  3. Step 3: Cross multiply
    39,858.24x = 55,025.48 × 30,885.60
  4. Step 4: Simplify right side
    39,858.24x = 1,699,494,965.09
  5. Step 5: Solve for x
    x = 1,699,494,965.09/39,858.24
  6. Step 6: Final answer
    x = 42,638.48

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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.