Home / 55,286.60-76,295.64-31,421.20

Finding the Fourth Proportional to 55,286.60, 76,295.64 and 31,421.20

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Solution

The fourth proportional to 55,286.60, 76,295.64 and 31,421.20 is: 43,361.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,286.60 : 76,295.64 = 31,421.20 : x
  2. Step 2: Convert to fraction form
    55,286.60/76,295.64 = 31,421.20/x
  3. Step 3: Cross multiply
    55,286.60x = 76,295.64 × 31,421.20
  4. Step 4: Simplify right side
    55,286.60x = 2,397,300,563.57
  5. Step 5: Solve for x
    x = 2,397,300,563.57/55,286.60
  6. Step 6: Final answer
    x = 43,361.33

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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.