Home / 78,452.13-118,105.05-71,476.95

Finding the Fourth Proportional to 78,452.13, 118,105.05 and 71,476.95

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Solution

The fourth proportional to 78,452.13, 118,105.05 and 71,476.95 is: 107,604.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,452.13 : 118,105.05 = 71,476.95 : x
  2. Step 2: Convert to fraction form
    78,452.13/118,105.05 = 71,476.95/x
  3. Step 3: Cross multiply
    78,452.13x = 118,105.05 × 71,476.95
  4. Step 4: Simplify right side
    78,452.13x = 8,441,788,753.60
  5. Step 5: Solve for x
    x = 8,441,788,753.60/78,452.13
  6. Step 6: Final answer
    x = 107,604.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.