Home / 47,815.09-71,720.80-12,754.45

Finding the Fourth Proportional to 47,815.09, 71,720.80 and 12,754.45

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Solution

The fourth proportional to 47,815.09, 71,720.80 and 12,754.45 is: 19,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,815.09 : 71,720.80 = 12,754.45 : x
  2. Step 2: Convert to fraction form
    47,815.09/71,720.80 = 12,754.45/x
  3. Step 3: Cross multiply
    47,815.09x = 71,720.80 × 12,754.45
  4. Step 4: Simplify right side
    47,815.09x = 914,759,357.56
  5. Step 5: Solve for x
    x = 914,759,357.56/47,815.09
  6. Step 6: Final answer
    x = 19,131.19

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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.