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Finding the Fourth Proportional to 92,419.72, 127,573.78 and 71,961.34

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Solution

The fourth proportional to 92,419.72, 127,573.78 and 71,961.34 is: 99,333.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,419.72 : 127,573.78 = 71,961.34 : x
  2. Step 2: Convert to fraction form
    92,419.72/127,573.78 = 71,961.34/x
  3. Step 3: Cross multiply
    92,419.72x = 127,573.78 × 71,961.34
  4. Step 4: Simplify right side
    92,419.72x = 9,180,380,157.67
  5. Step 5: Solve for x
    x = 9,180,380,157.67/92,419.72
  6. Step 6: Final answer
    x = 99,333.56

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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.