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Finding the Fourth Proportional to 68,492.79, 94,513.64 and 40,193.01

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Solution

The fourth proportional to 68,492.79, 94,513.64 and 40,193.01 is: 55,462.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,492.79 : 94,513.64 = 40,193.01 : x
  2. Step 2: Convert to fraction form
    68,492.79/94,513.64 = 40,193.01/x
  3. Step 3: Cross multiply
    68,492.79x = 94,513.64 × 40,193.01
  4. Step 4: Simplify right side
    68,492.79x = 3,798,787,476.69
  5. Step 5: Solve for x
    x = 3,798,787,476.69/68,492.79
  6. Step 6: Final answer
    x = 55,462.59

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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.