Home / 53,786.40-80,703.60-18,751.20

Finding the Fourth Proportional to 53,786.40, 80,703.60 and 18,751.20

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Solution

The fourth proportional to 53,786.40, 80,703.60 and 18,751.20 is: 28,135.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,786.40 : 80,703.60 = 18,751.20 : x
  2. Step 2: Convert to fraction form
    53,786.40/80,703.60 = 18,751.20/x
  3. Step 3: Cross multiply
    53,786.40x = 80,703.60 × 18,751.20
  4. Step 4: Simplify right side
    53,786.40x = 1,513,289,344.32
  5. Step 5: Solve for x
    x = 1,513,289,344.32/53,786.40
  6. Step 6: Final answer
    x = 28,135.17

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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.