Home / 53,977.60-80,942.10-20,686.60

Finding the Fourth Proportional to 53,977.60, 80,942.10 and 20,686.60

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Solution

The fourth proportional to 53,977.60, 80,942.10 and 20,686.60 is: 31,020.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,977.60 : 80,942.10 = 20,686.60 : x
  2. Step 2: Convert to fraction form
    53,977.60/80,942.10 = 20,686.60/x
  3. Step 3: Cross multiply
    53,977.60x = 80,942.10 × 20,686.60
  4. Step 4: Simplify right side
    53,977.60x = 1,674,416,845.86
  5. Step 5: Solve for x
    x = 1,674,416,845.86/53,977.60
  6. Step 6: Final answer
    x = 31,020.59

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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.