Home / 78,922.40-108,911.12-43,112.57

Finding the Fourth Proportional to 78,922.40, 108,911.12 and 43,112.57

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Solution

The fourth proportional to 78,922.40, 108,911.12 and 43,112.57 is: 59,494.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,922.40 : 108,911.12 = 43,112.57 : x
  2. Step 2: Convert to fraction form
    78,922.40/108,911.12 = 43,112.57/x
  3. Step 3: Cross multiply
    78,922.40x = 108,911.12 × 43,112.57
  4. Step 4: Simplify right side
    78,922.40x = 4,695,437,524.66
  5. Step 5: Solve for x
    x = 4,695,437,524.66/78,922.40
  6. Step 6: Final answer
    x = 59,494.36

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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.