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Finding the Fourth Proportional to 84,892.10, 127,245.15 and 42,704.90

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Solution

The fourth proportional to 84,892.10, 127,245.15 and 42,704.90 is: 64,010.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,892.10 : 127,245.15 = 42,704.90 : x
  2. Step 2: Convert to fraction form
    84,892.10/127,245.15 = 42,704.90/x
  3. Step 3: Cross multiply
    84,892.10x = 127,245.15 × 42,704.90
  4. Step 4: Simplify right side
    84,892.10x = 5,433,991,406.24
  5. Step 5: Solve for x
    x = 5,433,991,406.24/84,892.10
  6. Step 6: Final answer
    x = 64,010.57

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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.