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Finding the Fourth Proportional to 39,873.92, 55,012.80 and 25,736.16

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Solution

The fourth proportional to 39,873.92, 55,012.80 and 25,736.16 is: 35,507.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,873.92 : 55,012.80 = 25,736.16 : x
  2. Step 2: Convert to fraction form
    39,873.92/55,012.80 = 25,736.16/x
  3. Step 3: Cross multiply
    39,873.92x = 55,012.80 × 25,736.16
  4. Step 4: Simplify right side
    39,873.92x = 1,415,818,222.85
  5. Step 5: Solve for x
    x = 1,415,818,222.85/39,873.92
  6. Step 6: Final answer
    x = 35,507.37

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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.