Home / 53,421.22-80,129.60-13,977.46

Finding the Fourth Proportional to 53,421.22, 80,129.60 and 13,977.46

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Solution

The fourth proportional to 53,421.22, 80,129.60 and 13,977.46 is: 20,965.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,421.22 : 80,129.60 = 13,977.46 : x
  2. Step 2: Convert to fraction form
    53,421.22/80,129.60 = 13,977.46/x
  3. Step 3: Cross multiply
    53,421.22x = 80,129.60 × 13,977.46
  4. Step 4: Simplify right side
    53,421.22x = 1,120,008,440.13
  5. Step 5: Solve for x
    x = 1,120,008,440.13/53,421.22
  6. Step 6: Final answer
    x = 20,965.61

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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.