Home / 53,351.46-79,981.83-21,333.78

Finding the Fourth Proportional to 53,351.46, 79,981.83 and 21,333.78

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Solution

The fourth proportional to 53,351.46, 79,981.83 and 21,333.78 is: 31,982.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,351.46 : 79,981.83 = 21,333.78 : x
  2. Step 2: Convert to fraction form
    53,351.46/79,981.83 = 21,333.78/x
  3. Step 3: Cross multiply
    53,351.46x = 79,981.83 × 21,333.78
  4. Step 4: Simplify right side
    53,351.46x = 1,706,314,765.22
  5. Step 5: Solve for x
    x = 1,706,314,765.22/53,351.46
  6. Step 6: Final answer
    x = 31,982.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.