Home / 85,256.20-127,922.70-40,865.80

Finding the Fourth Proportional to 85,256.20, 127,922.70 and 40,865.80

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Solution

The fourth proportional to 85,256.20, 127,922.70 and 40,865.80 is: 61,317.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,256.20 : 127,922.70 = 40,865.80 : x
  2. Step 2: Convert to fraction form
    85,256.20/127,922.70 = 40,865.80/x
  3. Step 3: Cross multiply
    85,256.20x = 127,922.70 × 40,865.80
  4. Step 4: Simplify right side
    85,256.20x = 5,227,663,473.66
  5. Step 5: Solve for x
    x = 5,227,663,473.66/85,256.20
  6. Step 6: Final answer
    x = 61,317.11

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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.