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Finding the Fourth Proportional to 55,998.42, 83,996.64 and 13,878.42

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Solution

The fourth proportional to 55,998.42, 83,996.64 and 13,878.42 is: 20,817.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,998.42 : 83,996.64 = 13,878.42 : x
  2. Step 2: Convert to fraction form
    55,998.42/83,996.64 = 13,878.42/x
  3. Step 3: Cross multiply
    55,998.42x = 83,996.64 × 13,878.42
  4. Step 4: Simplify right side
    55,998.42x = 1,165,740,648.51
  5. Step 5: Solve for x
    x = 1,165,740,648.51/55,998.42
  6. Step 6: Final answer
    x = 20,817.38

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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.