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Finding the Fourth Proportional to 66,625.33, 91,944.09 and 39,762.62

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Solution

The fourth proportional to 66,625.33, 91,944.09 and 39,762.62 is: 54,873.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,625.33 : 91,944.09 = 39,762.62 : x
  2. Step 2: Convert to fraction form
    66,625.33/91,944.09 = 39,762.62/x
  3. Step 3: Cross multiply
    66,625.33x = 91,944.09 × 39,762.62
  4. Step 4: Simplify right side
    66,625.33x = 3,655,937,911.92
  5. Step 5: Solve for x
    x = 3,655,937,911.92/66,625.33
  6. Step 6: Final answer
    x = 54,873.09

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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.