Home / 81,435.47-122,168.57-30,849.64

Finding the Fourth Proportional to 81,435.47, 122,168.57 and 30,849.64

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Solution

The fourth proportional to 81,435.47, 122,168.57 and 30,849.64 is: 46,280.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,435.47 : 122,168.57 = 30,849.64 : x
  2. Step 2: Convert to fraction form
    81,435.47/122,168.57 = 30,849.64/x
  3. Step 3: Cross multiply
    81,435.47x = 122,168.57 × 30,849.64
  4. Step 4: Simplify right side
    81,435.47x = 3,768,856,403.81
  5. Step 5: Solve for x
    x = 3,768,856,403.81/81,435.47
  6. Step 6: Final answer
    x = 46,280.28

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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.