Home / 80,715.04-121,107.38-30,810.12

Finding the Fourth Proportional to 80,715.04, 121,107.38 and 30,810.12

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Solution

The fourth proportional to 80,715.04, 121,107.38 and 30,810.12 is: 46,228.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,715.04 : 121,107.38 = 30,810.12 : x
  2. Step 2: Convert to fraction form
    80,715.04/121,107.38 = 30,810.12/x
  3. Step 3: Cross multiply
    80,715.04x = 121,107.38 × 30,810.12
  4. Step 4: Simplify right side
    80,715.04x = 3,731,332,910.69
  5. Step 5: Solve for x
    x = 3,731,332,910.69/80,715.04
  6. Step 6: Final answer
    x = 46,228.47

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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.