Home / 55,682.75-76,842.20-30,532.79

Finding the Fourth Proportional to 55,682.75, 76,842.20 and 30,532.79

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Solution

The fourth proportional to 55,682.75, 76,842.20 and 30,532.79 is: 42,135.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,682.75 : 76,842.20 = 30,532.79 : x
  2. Step 2: Convert to fraction form
    55,682.75/76,842.20 = 30,532.79/x
  3. Step 3: Cross multiply
    55,682.75x = 76,842.20 × 30,532.79
  4. Step 4: Simplify right side
    55,682.75x = 2,346,206,755.74
  5. Step 5: Solve for x
    x = 2,346,206,755.74/55,682.75
  6. Step 6: Final answer
    x = 42,135.25

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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.