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Finding the Fourth Proportional to 68,707.28, 94,821.78 and 38,492

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Solution

The fourth proportional to 68,707.28, 94,821.78 and 38,492 is: 53,122.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,707.28 : 94,821.78 = 38,492 : x
  2. Step 2: Convert to fraction form
    68,707.28/94,821.78 = 38,492/x
  3. Step 3: Cross multiply
    68,707.28x = 94,821.78 × 38,492
  4. Step 4: Simplify right side
    68,707.28x = 3,649,879,955.76
  5. Step 5: Solve for x
    x = 3,649,879,955.76/68,707.28
  6. Step 6: Final answer
    x = 53,122.17

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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.