Home / 103,621.12-155,431.70-28,741.27

Finding the Fourth Proportional to 103,621.12, 155,431.70 and 28,741.27

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Solution

The fourth proportional to 103,621.12, 155,431.70 and 28,741.27 is: 43,111.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.12 : 155,431.70 = 28,741.27 : x
  2. Step 2: Convert to fraction form
    103,621.12/155,431.70 = 28,741.27/x
  3. Step 3: Cross multiply
    103,621.12x = 155,431.70 × 28,741.27
  4. Step 4: Simplify right side
    103,621.12x = 4,467,304,456.26
  5. Step 5: Solve for x
    x = 4,467,304,456.26/103,621.12
  6. Step 6: Final answer
    x = 43,111.91

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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.