Home / 78,684.74-118,043.89-25,379.71

Finding the Fourth Proportional to 78,684.74, 118,043.89 and 25,379.71

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Solution

The fourth proportional to 78,684.74, 118,043.89 and 25,379.71 is: 38,074.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,684.74 : 118,043.89 = 25,379.71 : x
  2. Step 2: Convert to fraction form
    78,684.74/118,043.89 = 25,379.71/x
  3. Step 3: Cross multiply
    78,684.74x = 118,043.89 × 25,379.71
  4. Step 4: Simplify right side
    78,684.74x = 2,995,918,978.35
  5. Step 5: Solve for x
    x = 2,995,918,978.35/78,684.74
  6. Step 6: Final answer
    x = 38,074.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.