Home / 53,387.31-80,129.27-28,448.43

Finding the Fourth Proportional to 53,387.31, 80,129.27 and 28,448.43

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Solution

The fourth proportional to 53,387.31, 80,129.27 and 28,448.43 is: 42,698.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,387.31 : 80,129.27 = 28,448.43 : x
  2. Step 2: Convert to fraction form
    53,387.31/80,129.27 = 28,448.43/x
  3. Step 3: Cross multiply
    53,387.31x = 80,129.27 × 28,448.43
  4. Step 4: Simplify right side
    53,387.31x = 2,279,551,928.55
  5. Step 5: Solve for x
    x = 2,279,551,928.55/53,387.31
  6. Step 6: Final answer
    x = 42,698.39

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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.