Home / 72,222.09-108,315.78-30,102.76

Finding the Fourth Proportional to 72,222.09, 108,315.78 and 30,102.76

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Solution

The fourth proportional to 72,222.09, 108,315.78 and 30,102.76 is: 45,146.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,222.09 : 108,315.78 = 30,102.76 : x
  2. Step 2: Convert to fraction form
    72,222.09/108,315.78 = 30,102.76/x
  3. Step 3: Cross multiply
    72,222.09x = 108,315.78 × 30,102.76
  4. Step 4: Simplify right side
    72,222.09x = 3,260,603,929.55
  5. Step 5: Solve for x
    x = 3,260,603,929.55/72,222.09
  6. Step 6: Final answer
    x = 45,146.91

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1.5x scale

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.