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Finding the Fourth Proportional to 55,419.60, 83,181.60 and 29,143.20

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Solution

The fourth proportional to 55,419.60, 83,181.60 and 29,143.20 is: 43,742.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,419.60 : 83,181.60 = 29,143.20 : x
  2. Step 2: Convert to fraction form
    55,419.60/83,181.60 = 29,143.20/x
  3. Step 3: Cross multiply
    55,419.60x = 83,181.60 × 29,143.20
  4. Step 4: Simplify right side
    55,419.60x = 2,424,178,005.12
  5. Step 5: Solve for x
    x = 2,424,178,005.12/55,419.60
  6. Step 6: Final answer
    x = 43,742.25

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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.