Home / 70,168.20-96,821.38-39,954.76

Finding the Fourth Proportional to 70,168.20, 96,821.38 and 39,954.76

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Solution

The fourth proportional to 70,168.20, 96,821.38 and 39,954.76 is: 55,131.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,168.20 : 96,821.38 = 39,954.76 : x
  2. Step 2: Convert to fraction form
    70,168.20/96,821.38 = 39,954.76/x
  3. Step 3: Cross multiply
    70,168.20x = 96,821.38 × 39,954.76
  4. Step 4: Simplify right side
    70,168.20x = 3,868,475,000.77
  5. Step 5: Solve for x
    x = 3,868,475,000.77/70,168.20
  6. Step 6: Final answer
    x = 55,131.46

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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.