Home / 81,800.06-122,701.64-25,638.94

Finding the Fourth Proportional to 81,800.06, 122,701.64 and 25,638.94

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Solution

The fourth proportional to 81,800.06, 122,701.64 and 25,638.94 is: 38,458.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,800.06 : 122,701.64 = 25,638.94 : x
  2. Step 2: Convert to fraction form
    81,800.06/122,701.64 = 25,638.94/x
  3. Step 3: Cross multiply
    81,800.06x = 122,701.64 × 25,638.94
  4. Step 4: Simplify right side
    81,800.06x = 3,145,939,550.91
  5. Step 5: Solve for x
    x = 3,145,939,550.91/81,800.06
  6. Step 6: Final answer
    x = 38,458.89

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1.5x scale

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.