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Finding the Fourth Proportional to 68,648.48, 94,724.94 and 38,428.23

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Solution

The fourth proportional to 68,648.48, 94,724.94 and 38,428.23 is: 53,025.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,648.48 : 94,724.94 = 38,428.23 : x
  2. Step 2: Convert to fraction form
    68,648.48/94,724.94 = 38,428.23/x
  3. Step 3: Cross multiply
    68,648.48x = 94,724.94 × 38,428.23
  4. Step 4: Simplify right side
    68,648.48x = 3,640,111,781.06
  5. Step 5: Solve for x
    x = 3,640,111,781.06/68,648.48
  6. Step 6: Final answer
    x = 53,025.38

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1.5x scale

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.