Home / 55,485.50-83,236.53-20,422.49

Finding the Fourth Proportional to 55,485.50, 83,236.53 and 20,422.49

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Solution

The fourth proportional to 55,485.50, 83,236.53 and 20,422.49 is: 30,636.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,485.50 : 83,236.53 = 20,422.49 : x
  2. Step 2: Convert to fraction form
    55,485.50/83,236.53 = 20,422.49/x
  3. Step 3: Cross multiply
    55,485.50x = 83,236.53 × 20,422.49
  4. Step 4: Simplify right side
    55,485.50x = 1,699,896,785.38
  5. Step 5: Solve for x
    x = 1,699,896,785.38/55,485.50
  6. Step 6: Final answer
    x = 30,636.78

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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.