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Finding the Fourth Proportional to 70,028.32, 96,629.52 and 40,220.32

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Solution

The fourth proportional to 70,028.32, 96,629.52 and 40,220.32 is: 55,498.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,028.32 : 96,629.52 = 40,220.32 : x
  2. Step 2: Convert to fraction form
    70,028.32/96,629.52 = 40,220.32/x
  3. Step 3: Cross multiply
    70,028.32x = 96,629.52 × 40,220.32
  4. Step 4: Simplify right side
    70,028.32x = 3,886,470,215.85
  5. Step 5: Solve for x
    x = 3,886,470,215.85/70,028.32
  6. Step 6: Final answer
    x = 55,498.55

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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.