Home / 81,546.33-112,539.55-45,738.65

Finding the Fourth Proportional to 81,546.33, 112,539.55 and 45,738.65

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Solution

The fourth proportional to 81,546.33, 112,539.55 and 45,738.65 is: 63,122.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,546.33 : 112,539.55 = 45,738.65 : x
  2. Step 2: Convert to fraction form
    81,546.33/112,539.55 = 45,738.65/x
  3. Step 3: Cross multiply
    81,546.33x = 112,539.55 × 45,738.65
  4. Step 4: Simplify right side
    81,546.33x = 5,147,406,411.56
  5. Step 5: Solve for x
    x = 5,147,406,411.56/81,546.33
  6. Step 6: Final answer
    x = 63,122.48

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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.