Home / 81,375.36-112,293-45,559.32

Finding the Fourth Proportional to 81,375.36, 112,293 and 45,559.32

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Solution

The fourth proportional to 81,375.36, 112,293 and 45,559.32 is: 62,869.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,375.36 : 112,293 = 45,559.32 : x
  2. Step 2: Convert to fraction form
    81,375.36/112,293 = 45,559.32/x
  3. Step 3: Cross multiply
    81,375.36x = 112,293 × 45,559.32
  4. Step 4: Simplify right side
    81,375.36x = 5,115,992,720.76
  5. Step 5: Solve for x
    x = 5,115,992,720.76/81,375.36
  6. Step 6: Final answer
    x = 62,869.06

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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.