Home / 85,270.20-127,942.12-45,781.20

Finding the Fourth Proportional to 85,270.20, 127,942.12 and 45,781.20

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Solution

The fourth proportional to 85,270.20, 127,942.12 and 45,781.20 is: 68,691.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,270.20 : 127,942.12 = 45,781.20 : x
  2. Step 2: Convert to fraction form
    85,270.20/127,942.12 = 45,781.20/x
  3. Step 3: Cross multiply
    85,270.20x = 127,942.12 × 45,781.20
  4. Step 4: Simplify right side
    85,270.20x = 5,857,343,784.14
  5. Step 5: Solve for x
    x = 5,857,343,784.14/85,270.20
  6. Step 6: Final answer
    x = 68,691.57

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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.