Home / 78,909.12-118,383.36-23,504.64

Finding the Fourth Proportional to 78,909.12, 118,383.36 and 23,504.64

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Solution

The fourth proportional to 78,909.12, 118,383.36 and 23,504.64 is: 35,262.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,909.12 : 118,383.36 = 23,504.64 : x
  2. Step 2: Convert to fraction form
    78,909.12/118,383.36 = 23,504.64/x
  3. Step 3: Cross multiply
    78,909.12x = 118,383.36 × 23,504.64
  4. Step 4: Simplify right side
    78,909.12x = 2,782,558,258.79
  5. Step 5: Solve for x
    x = 2,782,558,258.79/78,909.12
  6. Step 6: Final answer
    x = 35,262.82

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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.