Home / 80,887.65-121,295.03-30,951.15

Finding the Fourth Proportional to 80,887.65, 121,295.03 and 30,951.15

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Solution

The fourth proportional to 80,887.65, 121,295.03 and 30,951.15 is: 46,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,887.65 : 121,295.03 = 30,951.15 : x
  2. Step 2: Convert to fraction form
    80,887.65/121,295.03 = 30,951.15/x
  3. Step 3: Cross multiply
    80,887.65x = 121,295.03 × 30,951.15
  4. Step 4: Simplify right side
    80,887.65x = 3,754,220,513.03
  5. Step 5: Solve for x
    x = 3,754,220,513.03/80,887.65
  6. Step 6: Final answer
    x = 46,412.78

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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.