Home / 72,608.12-100,199.40-40,343.12

Finding the Fourth Proportional to 72,608.12, 100,199.40 and 40,343.12

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Solution

The fourth proportional to 72,608.12, 100,199.40 and 40,343.12 is: 55,673.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,608.12 : 100,199.40 = 40,343.12 : x
  2. Step 2: Convert to fraction form
    72,608.12/100,199.40 = 40,343.12/x
  3. Step 3: Cross multiply
    72,608.12x = 100,199.40 × 40,343.12
  4. Step 4: Simplify right side
    72,608.12x = 4,042,356,418.13
  5. Step 5: Solve for x
    x = 4,042,356,418.13/72,608.12
  6. Step 6: Final answer
    x = 55,673.61

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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.