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Finding the Fourth Proportional to 70,091.36, 96,722.70 and 39,873.84

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Solution

The fourth proportional to 70,091.36, 96,722.70 and 39,873.84 is: 55,023.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,091.36 : 96,722.70 = 39,873.84 : x
  2. Step 2: Convert to fraction form
    70,091.36/96,722.70 = 39,873.84/x
  3. Step 3: Cross multiply
    70,091.36x = 96,722.70 × 39,873.84
  4. Step 4: Simplify right side
    70,091.36x = 3,856,705,464.17
  5. Step 5: Solve for x
    x = 3,856,705,464.17/70,091.36
  6. Step 6: Final answer
    x = 55,023.98

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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.