Home / 51,009.48-70,375.68-31,876.20

Finding the Fourth Proportional to 51,009.48, 70,375.68 and 31,876.20

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Solution

The fourth proportional to 51,009.48, 70,375.68 and 31,876.20 is: 43,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,009.48 : 70,375.68 = 31,876.20 : x
  2. Step 2: Convert to fraction form
    51,009.48/70,375.68 = 31,876.20/x
  3. Step 3: Cross multiply
    51,009.48x = 70,375.68 × 31,876.20
  4. Step 4: Simplify right side
    51,009.48x = 2,243,309,250.82
  5. Step 5: Solve for x
    x = 2,243,309,250.82/51,009.48
  6. Step 6: Final answer
    x = 43,978.28

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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.