Home / 78,777.20-118,041.96-49,150.64

Finding the Fourth Proportional to 78,777.20, 118,041.96 and 49,150.64

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Solution

The fourth proportional to 78,777.20, 118,041.96 and 49,150.64 is: 73,648.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,777.20 : 118,041.96 = 49,150.64 : x
  2. Step 2: Convert to fraction form
    78,777.20/118,041.96 = 49,150.64/x
  3. Step 3: Cross multiply
    78,777.20x = 118,041.96 × 49,150.64
  4. Step 4: Simplify right side
    78,777.20x = 5,801,837,880.85
  5. Step 5: Solve for x
    x = 5,801,837,880.85/78,777.20
  6. Step 6: Final answer
    x = 73,648.69

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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.