Home / 81,725.55-112,823.24-56,531.31

Finding the Fourth Proportional to 81,725.55, 112,823.24 and 56,531.31

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Solution

The fourth proportional to 81,725.55, 112,823.24 and 56,531.31 is: 78,042.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,725.55 : 112,823.24 = 56,531.31 : x
  2. Step 2: Convert to fraction form
    81,725.55/112,823.24 = 56,531.31/x
  3. Step 3: Cross multiply
    81,725.55x = 112,823.24 × 56,531.31
  4. Step 4: Simplify right side
    81,725.55x = 6,378,045,555.64
  5. Step 5: Solve for x
    x = 6,378,045,555.64/81,725.55
  6. Step 6: Final answer
    x = 78,042.25

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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.