Home / 79,666.31-119,505.60-20,502.56

Finding the Fourth Proportional to 79,666.31, 119,505.60 and 20,502.56

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Solution

The fourth proportional to 79,666.31, 119,505.60 and 20,502.56 is: 30,755.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,666.31 : 119,505.60 = 20,502.56 : x
  2. Step 2: Convert to fraction form
    79,666.31/119,505.60 = 20,502.56/x
  3. Step 3: Cross multiply
    79,666.31x = 119,505.60 × 20,502.56
  4. Step 4: Simplify right side
    79,666.31x = 2,450,170,136.81
  5. Step 5: Solve for x
    x = 2,450,170,136.81/79,666.31
  6. Step 6: Final answer
    x = 30,755.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.