Home / 81,080.40-111,889.14-45,273.78

Finding the Fourth Proportional to 81,080.40, 111,889.14 and 45,273.78

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Solution

The fourth proportional to 81,080.40, 111,889.14 and 45,273.78 is: 62,476.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,080.40 : 111,889.14 = 45,273.78 : x
  2. Step 2: Convert to fraction form
    81,080.40/111,889.14 = 45,273.78/x
  3. Step 3: Cross multiply
    81,080.40x = 111,889.14 × 45,273.78
  4. Step 4: Simplify right side
    81,080.40x = 5,065,644,308.75
  5. Step 5: Solve for x
    x = 5,065,644,308.75/81,080.40
  6. Step 6: Final answer
    x = 62,476.80

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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.