Home / 55,785.94-83,642.56-20,240.64

Finding the Fourth Proportional to 55,785.94, 83,642.56 and 20,240.64

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Solution

The fourth proportional to 55,785.94, 83,642.56 and 20,240.64 is: 30,347.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,785.94 : 83,642.56 = 20,240.64 : x
  2. Step 2: Convert to fraction form
    55,785.94/83,642.56 = 20,240.64/x
  3. Step 3: Cross multiply
    55,785.94x = 83,642.56 × 20,240.64
  4. Step 4: Simplify right side
    55,785.94x = 1,692,978,895.04
  5. Step 5: Solve for x
    x = 1,692,978,895.04/55,785.94
  6. Step 6: Final answer
    x = 30,347.77

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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.