Home / 78,723.12-118,053.36-28,791.84

Finding the Fourth Proportional to 78,723.12, 118,053.36 and 28,791.84

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Solution

The fourth proportional to 78,723.12, 118,053.36 and 28,791.84 is: 43,176.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,723.12 : 118,053.36 = 28,791.84 : x
  2. Step 2: Convert to fraction form
    78,723.12/118,053.36 = 28,791.84/x
  3. Step 3: Cross multiply
    78,723.12x = 118,053.36 × 28,791.84
  4. Step 4: Simplify right side
    78,723.12x = 3,398,973,452.58
  5. Step 5: Solve for x
    x = 3,398,973,452.58/78,723.12
  6. Step 6: Final answer
    x = 43,176.31

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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.