Home / 66,837.78-92,236.11-39,986.59

Finding the Fourth Proportional to 66,837.78, 92,236.11 and 39,986.59

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Solution

The fourth proportional to 66,837.78, 92,236.11 and 39,986.59 is: 55,181.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,837.78 : 92,236.11 = 39,986.59 : x
  2. Step 2: Convert to fraction form
    66,837.78/92,236.11 = 39,986.59/x
  3. Step 3: Cross multiply
    66,837.78x = 92,236.11 × 39,986.59
  4. Step 4: Simplify right side
    66,837.78x = 3,688,207,513.76
  5. Step 5: Solve for x
    x = 3,688,207,513.76/66,837.78
  6. Step 6: Final answer
    x = 55,181.48

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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.