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Finding the Fourth Proportional to 55,323.99, 82,986.21 and 20,263.64

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Solution

The fourth proportional to 55,323.99, 82,986.21 and 20,263.64 is: 30,395.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,323.99 : 82,986.21 = 20,263.64 : x
  2. Step 2: Convert to fraction form
    55,323.99/82,986.21 = 20,263.64/x
  3. Step 3: Cross multiply
    55,323.99x = 82,986.21 × 20,263.64
  4. Step 4: Simplify right side
    55,323.99x = 1,681,602,269.47
  5. Step 5: Solve for x
    x = 1,681,602,269.47/55,323.99
  6. Step 6: Final answer
    x = 30,395.53

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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.