Home / 74,629.10-111,943.40-30,255.75

Finding the Fourth Proportional to 74,629.10, 111,943.40 and 30,255.75

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Solution

The fourth proportional to 74,629.10, 111,943.40 and 30,255.75 is: 45,383.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,629.10 : 111,943.40 = 30,255.75 : x
  2. Step 2: Convert to fraction form
    74,629.10/111,943.40 = 30,255.75/x
  3. Step 3: Cross multiply
    74,629.10x = 111,943.40 × 30,255.75
  4. Step 4: Simplify right side
    74,629.10x = 3,386,931,373.27
  5. Step 5: Solve for x
    x = 3,386,931,373.27/74,629.10
  6. Step 6: Final answer
    x = 45,383.52

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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.