Home / 31,381,149.78-43,264,383.54-25,778,349.88

Finding the Fourth Proportional to 31,381,149.78, 43,264,383.54 and 25,778,349.88

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Solution

The fourth proportional to 31,381,149.78, 43,264,383.54 and 25,778,349.88 is: 35,539,947.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,381,149.78 : 43,264,383.54 = 25,778,349.88 : x
  2. Step 2: Convert to fraction form
    31,381,149.78/43,264,383.54 = 25,778,349.88/x
  3. Step 3: Cross multiply
    31,381,149.78x = 43,264,383.54 × 25,778,349.88
  4. Step 4: Simplify right side
    31,381,149.78x = 1,115,284,416,420,237.75
  5. Step 5: Solve for x
    x = 1,115,284,416,420,237.75/31,381,149.78
  6. Step 6: Final answer
    x = 35,539,947.53

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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.