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Finding the Fourth Proportional to 85,697.26, 128,629.01 and 41,355.23

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Solution

The fourth proportional to 85,697.26, 128,629.01 and 41,355.23 is: 62,072.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,697.26 : 128,629.01 = 41,355.23 : x
  2. Step 2: Convert to fraction form
    85,697.26/128,629.01 = 41,355.23/x
  3. Step 3: Cross multiply
    85,697.26x = 128,629.01 × 41,355.23
  4. Step 4: Simplify right side
    85,697.26x = 5,319,481,753.47
  5. Step 5: Solve for x
    x = 5,319,481,753.47/85,697.26
  6. Step 6: Final answer
    x = 62,072.95

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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.