Home / 81,037.80-121,556.70-25,633.80

Finding the Fourth Proportional to 81,037.80, 121,556.70 and 25,633.80

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Solution

The fourth proportional to 81,037.80, 121,556.70 and 25,633.80 is: 38,450.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,037.80 : 121,556.70 = 25,633.80 : x
  2. Step 2: Convert to fraction form
    81,037.80/121,556.70 = 25,633.80/x
  3. Step 3: Cross multiply
    81,037.80x = 121,556.70 × 25,633.80
  4. Step 4: Simplify right side
    81,037.80x = 3,115,960,136.46
  5. Step 5: Solve for x
    x = 3,115,960,136.46/81,037.80
  6. Step 6: Final answer
    x = 38,450.70

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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.