Home / 55,321.80-76,348.62-31,455.96

Finding the Fourth Proportional to 55,321.80, 76,348.62 and 31,455.96

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Solution

The fourth proportional to 55,321.80, 76,348.62 and 31,455.96 is: 43,411.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,321.80 : 76,348.62 = 31,455.96 : x
  2. Step 2: Convert to fraction form
    55,321.80/76,348.62 = 31,455.96/x
  3. Step 3: Cross multiply
    55,321.80x = 76,348.62 × 31,455.96
  4. Step 4: Simplify right side
    55,321.80x = 2,401,619,136.78
  5. Step 5: Solve for x
    x = 2,401,619,136.78/55,321.80
  6. Step 6: Final answer
    x = 43,411.80

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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.