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Finding the Fourth Proportional to 70,162.81, 96,819.30 and 39,942.11

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Solution

The fourth proportional to 70,162.81, 96,819.30 and 39,942.11 is: 55,117.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,162.81 : 96,819.30 = 39,942.11 : x
  2. Step 2: Convert to fraction form
    70,162.81/96,819.30 = 39,942.11/x
  3. Step 3: Cross multiply
    70,162.81x = 96,819.30 × 39,942.11
  4. Step 4: Simplify right side
    70,162.81x = 3,867,167,372.77
  5. Step 5: Solve for x
    x = 3,867,167,372.77/70,162.81
  6. Step 6: Final answer
    x = 55,117.06

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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.