Home / 55,363.20-76,401.60-30,213.12

Finding the Fourth Proportional to 55,363.20, 76,401.60 and 30,213.12

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Solution

The fourth proportional to 55,363.20, 76,401.60 and 30,213.12 is: 41,694.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,363.20 : 76,401.60 = 30,213.12 : x
  2. Step 2: Convert to fraction form
    55,363.20/76,401.60 = 30,213.12/x
  3. Step 3: Cross multiply
    55,363.20x = 76,401.60 × 30,213.12
  4. Step 4: Simplify right side
    55,363.20x = 2,308,330,708.99
  5. Step 5: Solve for x
    x = 2,308,330,708.99/55,363.20
  6. Step 6: Final answer
    x = 41,694.32

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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.