Home / 81,861.76-112,848.96-57,914.56

Finding the Fourth Proportional to 81,861.76, 112,848.96 and 57,914.56

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Solution

The fourth proportional to 81,861.76, 112,848.96 and 57,914.56 is: 79,837.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,861.76 : 112,848.96 = 57,914.56 : x
  2. Step 2: Convert to fraction form
    81,861.76/112,848.96 = 57,914.56/x
  3. Step 3: Cross multiply
    81,861.76x = 112,848.96 × 57,914.56
  4. Step 4: Simplify right side
    81,861.76x = 6,535,597,864.86
  5. Step 5: Solve for x
    x = 6,535,597,864.86/81,861.76
  6. Step 6: Final answer
    x = 79,837.01

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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.