Home / 55,918.08-83,891.64-20,858

Finding the Fourth Proportional to 55,918.08, 83,891.64 and 20,858

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Solution

The fourth proportional to 55,918.08, 83,891.64 and 20,858 is: 31,292.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,918.08 : 83,891.64 = 20,858 : x
  2. Step 2: Convert to fraction form
    55,918.08/83,891.64 = 20,858/x
  3. Step 3: Cross multiply
    55,918.08x = 83,891.64 × 20,858
  4. Step 4: Simplify right side
    55,918.08x = 1,749,811,827.12
  5. Step 5: Solve for x
    x = 1,749,811,827.12/55,918.08
  6. Step 6: Final answer
    x = 31,292.42

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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.