Home / 76,505.43-105,590.03-63,738.37

Finding the Fourth Proportional to 76,505.43, 105,590.03 and 63,738.37

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Solution

The fourth proportional to 76,505.43, 105,590.03 and 63,738.37 is: 87,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,505.43 : 105,590.03 = 63,738.37 : x
  2. Step 2: Convert to fraction form
    76,505.43/105,590.03 = 63,738.37/x
  3. Step 3: Cross multiply
    76,505.43x = 105,590.03 × 63,738.37
  4. Step 4: Simplify right side
    76,505.43x = 6,730,136,213.75
  5. Step 5: Solve for x
    x = 6,730,136,213.75/76,505.43
  6. Step 6: Final answer
    x = 87,969.39

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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.