Home / 39,748.13-54,873.75-30,653.60

Finding the Fourth Proportional to 39,748.13, 54,873.75 and 30,653.60

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Solution

The fourth proportional to 39,748.13, 54,873.75 and 30,653.60 is: 42,318.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,748.13 : 54,873.75 = 30,653.60 : x
  2. Step 2: Convert to fraction form
    39,748.13/54,873.75 = 30,653.60/x
  3. Step 3: Cross multiply
    39,748.13x = 54,873.75 × 30,653.60
  4. Step 4: Simplify right side
    39,748.13x = 1,682,077,983
  5. Step 5: Solve for x
    x = 1,682,077,983/39,748.13
  6. Step 6: Final answer
    x = 42,318.42

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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.