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Finding the Fourth Proportional to 85,627.80, 118,163.92 and 47,388.95

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Solution

The fourth proportional to 85,627.80, 118,163.92 and 47,388.95 is: 65,395.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,627.80 : 118,163.92 = 47,388.95 : x
  2. Step 2: Convert to fraction form
    85,627.80/118,163.92 = 47,388.95/x
  3. Step 3: Cross multiply
    85,627.80x = 118,163.92 × 47,388.95
  4. Step 4: Simplify right side
    85,627.80x = 5,599,663,505.86
  5. Step 5: Solve for x
    x = 5,599,663,505.86/85,627.80
  6. Step 6: Final answer
    x = 65,395.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.