Home / 78,977.20-118,512.60-29,092.36

Finding the Fourth Proportional to 78,977.20, 118,512.60 and 29,092.36

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Solution

The fourth proportional to 78,977.20, 118,512.60 and 29,092.36 is: 43,655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,977.20 : 118,512.60 = 29,092.36 : x
  2. Step 2: Convert to fraction form
    78,977.20/118,512.60 = 29,092.36/x
  3. Step 3: Cross multiply
    78,977.20x = 118,512.60 × 29,092.36
  4. Step 4: Simplify right side
    78,977.20x = 3,447,811,223.74
  5. Step 5: Solve for x
    x = 3,447,811,223.74/78,977.20
  6. Step 6: Final answer
    x = 43,655.78

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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.