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Finding the Fourth Proportional to 80,868.87, 121,261.89 and 43,460.44

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Solution

The fourth proportional to 80,868.87, 121,261.89 and 43,460.44 is: 65,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,868.87 : 121,261.89 = 43,460.44 : x
  2. Step 2: Convert to fraction form
    80,868.87/121,261.89 = 43,460.44/x
  3. Step 3: Cross multiply
    80,868.87x = 121,261.89 × 43,460.44
  4. Step 4: Simplify right side
    80,868.87x = 5,270,095,094.63
  5. Step 5: Solve for x
    x = 5,270,095,094.63/80,868.87
  6. Step 6: Final answer
    x = 65,168.40

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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.