Home / 53,805.78-80,681.27-28,519.20

Finding the Fourth Proportional to 53,805.78, 80,681.27 and 28,519.20

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Solution

The fourth proportional to 53,805.78, 80,681.27 and 28,519.20 is: 42,764.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,805.78 : 80,681.27 = 28,519.20 : x
  2. Step 2: Convert to fraction form
    53,805.78/80,681.27 = 28,519.20/x
  3. Step 3: Cross multiply
    53,805.78x = 80,681.27 × 28,519.20
  4. Step 4: Simplify right side
    53,805.78x = 2,300,965,132.79
  5. Step 5: Solve for x
    x = 2,300,965,132.79/53,805.78
  6. Step 6: Final answer
    x = 42,764.27

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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.