Home / 55,003.20-82,485.60-28,699.20

Finding the Fourth Proportional to 55,003.20, 82,485.60 and 28,699.20

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Solution

The fourth proportional to 55,003.20, 82,485.60 and 28,699.20 is: 43,038.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,003.20 : 82,485.60 = 28,699.20 : x
  2. Step 2: Convert to fraction form
    55,003.20/82,485.60 = 28,699.20/x
  3. Step 3: Cross multiply
    55,003.20x = 82,485.60 × 28,699.20
  4. Step 4: Simplify right side
    55,003.20x = 2,367,270,731.52
  5. Step 5: Solve for x
    x = 2,367,270,731.52/55,003.20
  6. Step 6: Final answer
    x = 43,038.78

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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.