Home / 72,485.43-100,028.66-40,653.64

Finding the Fourth Proportional to 72,485.43, 100,028.66 and 40,653.64

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Solution

The fourth proportional to 72,485.43, 100,028.66 and 40,653.64 is: 56,101.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,485.43 : 100,028.66 = 40,653.64 : x
  2. Step 2: Convert to fraction form
    72,485.43/100,028.66 = 40,653.64/x
  3. Step 3: Cross multiply
    72,485.43x = 100,028.66 × 40,653.64
  4. Step 4: Simplify right side
    72,485.43x = 4,066,529,133.32
  5. Step 5: Solve for x
    x = 4,066,529,133.32/72,485.43
  6. Step 6: Final answer
    x = 56,101.33

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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.