Home / 53,629.70-74,019.78-30,972.38

Finding the Fourth Proportional to 53,629.70, 74,019.78 and 30,972.38

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Solution

The fourth proportional to 53,629.70, 74,019.78 and 30,972.38 is: 42,748.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,629.70 : 74,019.78 = 30,972.38 : x
  2. Step 2: Convert to fraction form
    53,629.70/74,019.78 = 30,972.38/x
  3. Step 3: Cross multiply
    53,629.70x = 74,019.78 × 30,972.38
  4. Step 4: Simplify right side
    53,629.70x = 2,292,568,753.68
  5. Step 5: Solve for x
    x = 2,292,568,753.68/53,629.70
  6. Step 6: Final answer
    x = 42,748.12

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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.