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Finding the Fourth Proportional to 68,360.96, 94,335.36 and 39,681.20

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Solution

The fourth proportional to 68,360.96, 94,335.36 and 39,681.20 is: 54,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,360.96 : 94,335.36 = 39,681.20 : x
  2. Step 2: Convert to fraction form
    68,360.96/94,335.36 = 39,681.20/x
  3. Step 3: Cross multiply
    68,360.96x = 94,335.36 × 39,681.20
  4. Step 4: Simplify right side
    68,360.96x = 3,743,340,287.23
  5. Step 5: Solve for x
    x = 3,743,340,287.23/68,360.96
  6. Step 6: Final answer
    x = 54,758.45

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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.