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Finding the Fourth Proportional to 86,043.60, 118,706.99 and 63,436.32

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Solution

The fourth proportional to 86,043.60, 118,706.99 and 63,436.32 is: 87,517.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,043.60 : 118,706.99 = 63,436.32 : x
  2. Step 2: Convert to fraction form
    86,043.60/118,706.99 = 63,436.32/x
  3. Step 3: Cross multiply
    86,043.60x = 118,706.99 × 63,436.32
  4. Step 4: Simplify right side
    86,043.60x = 7,530,334,286.70
  5. Step 5: Solve for x
    x = 7,530,334,286.70/86,043.60
  6. Step 6: Final answer
    x = 87,517.66

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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.