Home / 40,170.60-55,435.32-23,178.42

Finding the Fourth Proportional to 40,170.60, 55,435.32 and 23,178.42

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Solution

The fourth proportional to 40,170.60, 55,435.32 and 23,178.42 is: 31,986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,170.60 : 55,435.32 = 23,178.42 : x
  2. Step 2: Convert to fraction form
    40,170.60/55,435.32 = 23,178.42/x
  3. Step 3: Cross multiply
    40,170.60x = 55,435.32 × 23,178.42
  4. Step 4: Simplify right side
    40,170.60x = 1,284,903,129.79
  5. Step 5: Solve for x
    x = 1,284,903,129.79/40,170.60
  6. Step 6: Final answer
    x = 31,986.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.