Home / 56,703.72-78,251.16-31,553.28

Finding the Fourth Proportional to 56,703.72, 78,251.16 and 31,553.28

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Solution

The fourth proportional to 56,703.72, 78,251.16 and 31,553.28 is: 43,543.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,703.72 : 78,251.16 = 31,553.28 : x
  2. Step 2: Convert to fraction form
    56,703.72/78,251.16 = 31,553.28/x
  3. Step 3: Cross multiply
    56,703.72x = 78,251.16 × 31,553.28
  4. Step 4: Simplify right side
    56,703.72x = 2,469,080,761.80
  5. Step 5: Solve for x
    x = 2,469,080,761.80/56,703.72
  6. Step 6: Final answer
    x = 43,543.54

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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.