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Finding the Fourth Proportional to 69,101.42, 103,652.10 and 19,181.51

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Solution

The fourth proportional to 69,101.42, 103,652.10 and 19,181.51 is: 28,772.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,101.42 : 103,652.10 = 19,181.51 : x
  2. Step 2: Convert to fraction form
    69,101.42/103,652.10 = 19,181.51/x
  3. Step 3: Cross multiply
    69,101.42x = 103,652.10 × 19,181.51
  4. Step 4: Simplify right side
    69,101.42x = 1,988,203,792.67
  5. Step 5: Solve for x
    x = 1,988,203,792.67/69,101.42
  6. Step 6: Final answer
    x = 28,772.26

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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.