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Finding the Fourth Proportional to 78,596.16, 117,736.32 and 39,033.60

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Solution

The fourth proportional to 78,596.16, 117,736.32 and 39,033.60 is: 58,471.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,596.16 : 117,736.32 = 39,033.60 : x
  2. Step 2: Convert to fraction form
    78,596.16/117,736.32 = 39,033.60/x
  3. Step 3: Cross multiply
    78,596.16x = 117,736.32 × 39,033.60
  4. Step 4: Simplify right side
    78,596.16x = 4,595,672,420.35
  5. Step 5: Solve for x
    x = 4,595,672,420.35/78,596.16
  6. Step 6: Final answer
    x = 58,471.97

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1.5x scale

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.