Home / 76,755.06-105,914.79-56,623.11

Finding the Fourth Proportional to 76,755.06, 105,914.79 and 56,623.11

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Solution

The fourth proportional to 76,755.06, 105,914.79 and 56,623.11 is: 78,134.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,755.06 : 105,914.79 = 56,623.11 : x
  2. Step 2: Convert to fraction form
    76,755.06/105,914.79 = 56,623.11/x
  3. Step 3: Cross multiply
    76,755.06x = 105,914.79 × 56,623.11
  4. Step 4: Simplify right side
    76,755.06x = 5,997,224,804.80
  5. Step 5: Solve for x
    x = 5,997,224,804.80/76,755.06
  6. Step 6: Final answer
    x = 78,134.59

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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.