Home / 55,421.99-83,166.11-20,365.19

Finding the Fourth Proportional to 55,421.99, 83,166.11 and 20,365.19

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Solution

The fourth proportional to 55,421.99, 83,166.11 and 20,365.19 is: 30,559.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,421.99 : 83,166.11 = 20,365.19 : x
  2. Step 2: Convert to fraction form
    55,421.99/83,166.11 = 20,365.19/x
  3. Step 3: Cross multiply
    55,421.99x = 83,166.11 × 20,365.19
  4. Step 4: Simplify right side
    55,421.99x = 1,693,693,814.17
  5. Step 5: Solve for x
    x = 1,693,693,814.17/55,421.99
  6. Step 6: Final answer
    x = 30,559.96

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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.