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Finding the Fourth Proportional to 85,338.60, 117,766.86 and 47,612.76

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Solution

The fourth proportional to 85,338.60, 117,766.86 and 47,612.76 is: 65,705.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,338.60 : 117,766.86 = 47,612.76 : x
  2. Step 2: Convert to fraction form
    85,338.60/117,766.86 = 47,612.76/x
  3. Step 3: Cross multiply
    85,338.60x = 117,766.86 × 47,612.76
  4. Step 4: Simplify right side
    85,338.60x = 5,607,205,241.13
  5. Step 5: Solve for x
    x = 5,607,205,241.13/85,338.60
  6. Step 6: Final answer
    x = 65,705.38

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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.