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Finding the Fourth Proportional to 68,468.16, 94,492.32 and 54,147.20

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Solution

The fourth proportional to 68,468.16, 94,492.32 and 54,147.20 is: 74,728.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,468.16 : 94,492.32 = 54,147.20 : x
  2. Step 2: Convert to fraction form
    68,468.16/94,492.32 = 54,147.20/x
  3. Step 3: Cross multiply
    68,468.16x = 94,492.32 × 54,147.20
  4. Step 4: Simplify right side
    68,468.16x = 5,116,494,549.50
  5. Step 5: Solve for x
    x = 5,116,494,549.50/68,468.16
  6. Step 6: Final answer
    x = 74,728.09

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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.