Home / 81,561.78-112,546.26-45,744.39

Finding the Fourth Proportional to 81,561.78, 112,546.26 and 45,744.39

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Solution

The fourth proportional to 81,561.78, 112,546.26 and 45,744.39 is: 63,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,561.78 : 112,546.26 = 45,744.39 : x
  2. Step 2: Convert to fraction form
    81,561.78/112,546.26 = 45,744.39/x
  3. Step 3: Cross multiply
    81,561.78x = 112,546.26 × 45,744.39
  4. Step 4: Simplify right side
    81,561.78x = 5,148,360,010.48
  5. Step 5: Solve for x
    x = 5,148,360,010.48/81,561.78
  6. Step 6: Final answer
    x = 63,122.21

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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.