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Finding the Fourth Proportional to 68,681.54, 94,782.63 and 38,466.80

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Solution

The fourth proportional to 68,681.54, 94,782.63 and 38,466.80 is: 53,085.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,681.54 : 94,782.63 = 38,466.80 : x
  2. Step 2: Convert to fraction form
    68,681.54/94,782.63 = 38,466.80/x
  3. Step 3: Cross multiply
    68,681.54x = 94,782.63 × 38,466.80
  4. Step 4: Simplify right side
    68,681.54x = 3,645,984,471.68
  5. Step 5: Solve for x
    x = 3,645,984,471.68/68,681.54
  6. Step 6: Final answer
    x = 53,085.36

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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.