Home / 81,733.86-122,597.46-28,438.04

Finding the Fourth Proportional to 81,733.86, 122,597.46 and 28,438.04

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Solution

The fourth proportional to 81,733.86, 122,597.46 and 28,438.04 is: 42,655.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,733.86 : 122,597.46 = 28,438.04 : x
  2. Step 2: Convert to fraction form
    81,733.86/122,597.46 = 28,438.04/x
  3. Step 3: Cross multiply
    81,733.86x = 122,597.46 × 28,438.04
  4. Step 4: Simplify right side
    81,733.86x = 3,486,430,858.39
  5. Step 5: Solve for x
    x = 3,486,430,858.39/81,733.86
  6. Step 6: Final answer
    x = 42,655.89

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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.