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Finding the Fourth Proportional to 68,784.39, 94,915.87 and 38,570.99

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Solution

The fourth proportional to 68,784.39, 94,915.87 and 38,570.99 is: 53,224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,784.39 : 94,915.87 = 38,570.99 : x
  2. Step 2: Convert to fraction form
    68,784.39/94,915.87 = 38,570.99/x
  3. Step 3: Cross multiply
    68,784.39x = 94,915.87 × 38,570.99
  4. Step 4: Simplify right side
    68,784.39x = 3,660,998,501.60
  5. Step 5: Solve for x
    x = 3,660,998,501.60/68,784.39
  6. Step 6: Final answer
    x = 53,224.26

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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.