Home / 53,830.40-80,719.68-18,769.28

Finding the Fourth Proportional to 53,830.40, 80,719.68 and 18,769.28

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Solution

The fourth proportional to 53,830.40, 80,719.68 and 18,769.28 is: 28,144.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,830.40 : 80,719.68 = 18,769.28 : x
  2. Step 2: Convert to fraction form
    53,830.40/80,719.68 = 18,769.28/x
  3. Step 3: Cross multiply
    53,830.40x = 80,719.68 × 18,769.28
  4. Step 4: Simplify right side
    53,830.40x = 1,515,050,275.43
  5. Step 5: Solve for x
    x = 1,515,050,275.43/53,830.40
  6. Step 6: Final answer
    x = 28,144.88

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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.