Home / 55,132.80-76,078.24-31,261.60

Finding the Fourth Proportional to 55,132.80, 76,078.24 and 31,261.60

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Solution

The fourth proportional to 55,132.80, 76,078.24 and 31,261.60 is: 43,138.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,132.80 : 76,078.24 = 31,261.60 : x
  2. Step 2: Convert to fraction form
    55,132.80/76,078.24 = 31,261.60/x
  3. Step 3: Cross multiply
    55,132.80x = 76,078.24 × 31,261.60
  4. Step 4: Simplify right side
    55,132.80x = 2,378,327,507.58
  5. Step 5: Solve for x
    x = 2,378,327,507.58/55,132.80
  6. Step 6: Final answer
    x = 43,138.16

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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.