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Finding the Fourth Proportional to 80,980.60, 111,805.26 and 50,807.32

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Solution

The fourth proportional to 80,980.60, 111,805.26 and 50,807.32 is: 70,146.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,980.60 : 111,805.26 = 50,807.32 : x
  2. Step 2: Convert to fraction form
    80,980.60/111,805.26 = 50,807.32/x
  3. Step 3: Cross multiply
    80,980.60x = 111,805.26 × 50,807.32
  4. Step 4: Simplify right side
    80,980.60x = 5,680,525,622.50
  5. Step 5: Solve for x
    x = 5,680,525,622.50/80,980.60
  6. Step 6: Final answer
    x = 70,146.75

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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.