Home / 72,748.94-109,111.26-20,163.74

Finding the Fourth Proportional to 72,748.94, 109,111.26 and 20,163.74

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Solution

The fourth proportional to 72,748.94, 109,111.26 and 20,163.74 is: 30,242.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,748.94 : 109,111.26 = 20,163.74 : x
  2. Step 2: Convert to fraction form
    72,748.94/109,111.26 = 20,163.74/x
  3. Step 3: Cross multiply
    72,748.94x = 109,111.26 × 20,163.74
  4. Step 4: Simplify right side
    72,748.94x = 2,200,091,077.71
  5. Step 5: Solve for x
    x = 2,200,091,077.71/72,748.94
  6. Step 6: Final answer
    x = 30,242.24

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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.