Home / 52,811.28-79,216.92-21,235.76

Finding the Fourth Proportional to 52,811.28, 79,216.92 and 21,235.76

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Solution

The fourth proportional to 52,811.28, 79,216.92 and 21,235.76 is: 31,853.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,811.28 : 79,216.92 = 21,235.76 : x
  2. Step 2: Convert to fraction form
    52,811.28/79,216.92 = 21,235.76/x
  3. Step 3: Cross multiply
    52,811.28x = 79,216.92 × 21,235.76
  4. Step 4: Simplify right side
    52,811.28x = 1,682,231,501.06
  5. Step 5: Solve for x
    x = 1,682,231,501.06/52,811.28
  6. Step 6: Final answer
    x = 31,853.64

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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.