Home / 51,009.60-70,375.68-31,876.32

Finding the Fourth Proportional to 51,009.60, 70,375.68 and 31,876.32

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Solution

The fourth proportional to 51,009.60, 70,375.68 and 31,876.32 is: 43,978.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,009.60 : 70,375.68 = 31,876.32 : x
  2. Step 2: Convert to fraction form
    51,009.60/70,375.68 = 31,876.32/x
  3. Step 3: Cross multiply
    51,009.60x = 70,375.68 × 31,876.32
  4. Step 4: Simplify right side
    51,009.60x = 2,243,317,695.90
  5. Step 5: Solve for x
    x = 2,243,317,695.90/51,009.60
  6. Step 6: Final answer
    x = 43,978.34

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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.