Home / 84,173.43-126,256.04-31,578.81

Finding the Fourth Proportional to 84,173.43, 126,256.04 and 31,578.81

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Solution

The fourth proportional to 84,173.43, 126,256.04 and 31,578.81 is: 47,366.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,173.43 : 126,256.04 = 31,578.81 : x
  2. Step 2: Convert to fraction form
    84,173.43/126,256.04 = 31,578.81/x
  3. Step 3: Cross multiply
    84,173.43x = 126,256.04 × 31,578.81
  4. Step 4: Simplify right side
    84,173.43x = 3,987,015,498.51
  5. Step 5: Solve for x
    x = 3,987,015,498.51/84,173.43
  6. Step 6: Final answer
    x = 47,366.67

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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.