Home / 72,804.20-109,206.36-20,213.76

Finding the Fourth Proportional to 72,804.20, 109,206.36 and 20,213.76

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Solution

The fourth proportional to 72,804.20, 109,206.36 and 20,213.76 is: 30,320.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,804.20 : 109,206.36 = 20,213.76 : x
  2. Step 2: Convert to fraction form
    72,804.20/109,206.36 = 20,213.76/x
  3. Step 3: Cross multiply
    72,804.20x = 109,206.36 × 20,213.76
  4. Step 4: Simplify right side
    72,804.20x = 2,207,471,151.51
  5. Step 5: Solve for x
    x = 2,207,471,151.51/72,804.20
  6. Step 6: Final answer
    x = 30,320.66

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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.