Home / 78,845.86-118,276.44-28,913.92

Finding the Fourth Proportional to 78,845.86, 118,276.44 and 28,913.92

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Solution

The fourth proportional to 78,845.86, 118,276.44 and 28,913.92 is: 43,373.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,845.86 : 118,276.44 = 28,913.92 : x
  2. Step 2: Convert to fraction form
    78,845.86/118,276.44 = 28,913.92/x
  3. Step 3: Cross multiply
    78,845.86x = 118,276.44 × 28,913.92
  4. Step 4: Simplify right side
    78,845.86x = 3,419,835,524.04
  5. Step 5: Solve for x
    x = 3,419,835,524.04/78,845.86
  6. Step 6: Final answer
    x = 43,373.69

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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.