Home / 72,236.28-99,689.94-40,403.28

Finding the Fourth Proportional to 72,236.28, 99,689.94 and 40,403.28

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Solution

The fourth proportional to 72,236.28, 99,689.94 and 40,403.28 is: 55,758.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,236.28 : 99,689.94 = 40,403.28 : x
  2. Step 2: Convert to fraction form
    72,236.28/99,689.94 = 40,403.28/x
  3. Step 3: Cross multiply
    72,236.28x = 99,689.94 × 40,403.28
  4. Step 4: Simplify right side
    72,236.28x = 4,027,800,559.00
  5. Step 5: Solve for x
    x = 4,027,800,559.00/72,236.28
  6. Step 6: Final answer
    x = 55,758.69

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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.