Home / 52,858.91-79,286.85-21,259.19

Finding the Fourth Proportional to 52,858.91, 79,286.85 and 21,259.19

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Solution

The fourth proportional to 52,858.91, 79,286.85 and 21,259.19 is: 31,888.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,858.91 : 79,286.85 = 21,259.19 : x
  2. Step 2: Convert to fraction form
    52,858.91/79,286.85 = 21,259.19/x
  3. Step 3: Cross multiply
    52,858.91x = 79,286.85 × 21,259.19
  4. Step 4: Simplify right side
    52,858.91x = 1,685,574,406.87
  5. Step 5: Solve for x
    x = 1,685,574,406.87/52,858.91
  6. Step 6: Final answer
    x = 31,888.18

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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.