Home / 68,090.31-93,965.94-39,812.40

Finding the Fourth Proportional to 68,090.31, 93,965.94 and 39,812.40

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Solution

The fourth proportional to 68,090.31, 93,965.94 and 39,812.40 is: 54,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,090.31 : 93,965.94 = 39,812.40 : x
  2. Step 2: Convert to fraction form
    68,090.31/93,965.94 = 39,812.40/x
  3. Step 3: Cross multiply
    68,090.31x = 93,965.94 × 39,812.40
  4. Step 4: Simplify right side
    68,090.31x = 3,741,009,589.66
  5. Step 5: Solve for x
    x = 3,741,009,589.66/68,090.31
  6. Step 6: Final answer
    x = 54,941.88

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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.