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Finding the Fourth Proportional to 83,706.16, 115,512.60 and 45,979.60

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Solution

The fourth proportional to 83,706.16, 115,512.60 and 45,979.60 is: 63,450.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,706.16 : 115,512.60 = 45,979.60 : x
  2. Step 2: Convert to fraction form
    83,706.16/115,512.60 = 45,979.60/x
  3. Step 3: Cross multiply
    83,706.16x = 115,512.60 × 45,979.60
  4. Step 4: Simplify right side
    83,706.16x = 5,311,223,142.96
  5. Step 5: Solve for x
    x = 5,311,223,142.96/83,706.16
  6. Step 6: Final answer
    x = 63,450.80

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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.