Home / 56,754.43-78,321.64-31,260.88

Finding the Fourth Proportional to 56,754.43, 78,321.64 and 31,260.88

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Solution

The fourth proportional to 56,754.43, 78,321.64 and 31,260.88 is: 43,140.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,754.43 : 78,321.64 = 31,260.88 : x
  2. Step 2: Convert to fraction form
    56,754.43/78,321.64 = 31,260.88/x
  3. Step 3: Cross multiply
    56,754.43x = 78,321.64 × 31,260.88
  4. Step 4: Simplify right side
    56,754.43x = 2,448,403,389.44
  5. Step 5: Solve for x
    x = 2,448,403,389.44/56,754.43
  6. Step 6: Final answer
    x = 43,140.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.