Home / 55,321.45-76,342.89-31,446.55

Finding the Fourth Proportional to 55,321.45, 76,342.89 and 31,446.55

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Solution

The fourth proportional to 55,321.45, 76,342.89 and 31,446.55 is: 43,395.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,321.45 : 76,342.89 = 31,446.55 : x
  2. Step 2: Convert to fraction form
    55,321.45/76,342.89 = 31,446.55/x
  3. Step 3: Cross multiply
    55,321.45x = 76,342.89 × 31,446.55
  4. Step 4: Simplify right side
    55,321.45x = 2,400,720,507.53
  5. Step 5: Solve for x
    x = 2,400,720,507.53/55,321.45
  6. Step 6: Final answer
    x = 43,395.83

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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.