Home / 78,177.07-107,884.19-42,367.96

Finding the Fourth Proportional to 78,177.07, 107,884.19 and 42,367.96

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Solution

The fourth proportional to 78,177.07, 107,884.19 and 42,367.96 is: 58,467.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,177.07 : 107,884.19 = 42,367.96 : x
  2. Step 2: Convert to fraction form
    78,177.07/107,884.19 = 42,367.96/x
  3. Step 3: Cross multiply
    78,177.07x = 107,884.19 × 42,367.96
  4. Step 4: Simplify right side
    78,177.07x = 4,570,832,295.29
  5. Step 5: Solve for x
    x = 4,570,832,295.29/78,177.07
  6. Step 6: Final answer
    x = 58,467.69

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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.