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Finding the Fourth Proportional to 69,219.68, 103,829.52 and 19,297.76

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Solution

The fourth proportional to 69,219.68, 103,829.52 and 19,297.76 is: 28,946.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,219.68 : 103,829.52 = 19,297.76 : x
  2. Step 2: Convert to fraction form
    69,219.68/103,829.52 = 19,297.76/x
  3. Step 3: Cross multiply
    69,219.68x = 103,829.52 × 19,297.76
  4. Step 4: Simplify right side
    69,219.68x = 2,003,677,157.88
  5. Step 5: Solve for x
    x = 2,003,677,157.88/69,219.68
  6. Step 6: Final answer
    x = 28,946.64

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1.5x scale

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.