Home / 80,813.36-121,179.48-47,090.28

Finding the Fourth Proportional to 80,813.36, 121,179.48 and 47,090.28

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Solution

The fourth proportional to 80,813.36, 121,179.48 and 47,090.28 is: 70,611.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,813.36 : 121,179.48 = 47,090.28 : x
  2. Step 2: Convert to fraction form
    80,813.36/121,179.48 = 47,090.28/x
  3. Step 3: Cross multiply
    80,813.36x = 121,179.48 × 47,090.28
  4. Step 4: Simplify right side
    80,813.36x = 5,706,375,643.45
  5. Step 5: Solve for x
    x = 5,706,375,643.45/80,813.36
  6. Step 6: Final answer
    x = 70,611.79

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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.