Home / 80,921.80-111,672.20-45,111.04

Finding the Fourth Proportional to 80,921.80, 111,672.20 and 45,111.04

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Solution

The fourth proportional to 80,921.80, 111,672.20 and 45,111.04 is: 62,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,921.80 : 111,672.20 = 45,111.04 : x
  2. Step 2: Convert to fraction form
    80,921.80/111,672.20 = 45,111.04/x
  3. Step 3: Cross multiply
    80,921.80x = 111,672.20 × 45,111.04
  4. Step 4: Simplify right side
    80,921.80x = 5,037,648,914.69
  5. Step 5: Solve for x
    x = 5,037,648,914.69/80,921.80
  6. Step 6: Final answer
    x = 62,253.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.