Home / 53,765.89-80,668.56-18,715.57

Finding the Fourth Proportional to 53,765.89, 80,668.56 and 18,715.57

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Solution

The fourth proportional to 53,765.89, 80,668.56 and 18,715.57 is: 28,080.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,765.89 : 80,668.56 = 18,715.57 : x
  2. Step 2: Convert to fraction form
    53,765.89/80,668.56 = 18,715.57/x
  3. Step 3: Cross multiply
    53,765.89x = 80,668.56 × 18,715.57
  4. Step 4: Simplify right side
    53,765.89x = 1,509,758,081.48
  5. Step 5: Solve for x
    x = 1,509,758,081.48/53,765.89
  6. Step 6: Final answer
    x = 28,080.22

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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.