Home / 79,669.32-119,510.10-20,505.57

Finding the Fourth Proportional to 79,669.32, 119,510.10 and 20,505.57

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Solution

The fourth proportional to 79,669.32, 119,510.10 and 20,505.57 is: 30,759.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,669.32 : 119,510.10 = 20,505.57 : x
  2. Step 2: Convert to fraction form
    79,669.32/119,510.10 = 20,505.57/x
  3. Step 3: Cross multiply
    79,669.32x = 119,510.10 × 20,505.57
  4. Step 4: Simplify right side
    79,669.32x = 2,450,622,721.26
  5. Step 5: Solve for x
    x = 2,450,622,721.26/79,669.32
  6. Step 6: Final answer
    x = 30,759.93

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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.