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Finding the Fourth Proportional to 68,518.68, 94,568.22 and 39,842.40

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Solution

The fourth proportional to 68,518.68, 94,568.22 and 39,842.40 is: 54,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,518.68 : 94,568.22 = 39,842.40 : x
  2. Step 2: Convert to fraction form
    68,518.68/94,568.22 = 39,842.40/x
  3. Step 3: Cross multiply
    68,518.68x = 94,568.22 × 39,842.40
  4. Step 4: Simplify right side
    68,518.68x = 3,767,824,848.53
  5. Step 5: Solve for x
    x = 3,767,824,848.53/68,518.68
  6. Step 6: Final answer
    x = 54,989.75

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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.