Home / 81,699.20-122,536.80-25,526.24

Finding the Fourth Proportional to 81,699.20, 122,536.80 and 25,526.24

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Solution

The fourth proportional to 81,699.20, 122,536.80 and 25,526.24 is: 38,285.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,699.20 : 122,536.80 = 25,526.24 : x
  2. Step 2: Convert to fraction form
    81,699.20/122,536.80 = 25,526.24/x
  3. Step 3: Cross multiply
    81,699.20x = 122,536.80 × 25,526.24
  4. Step 4: Simplify right side
    81,699.20x = 3,127,903,765.63
  5. Step 5: Solve for x
    x = 3,127,903,765.63/81,699.20
  6. Step 6: Final answer
    x = 38,285.61

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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.