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Finding the Fourth Proportional to 68,117.68, 94,009.98 and 39,821.68

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Solution

The fourth proportional to 68,117.68, 94,009.98 and 39,821.68 is: 54,958.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,117.68 : 94,009.98 = 39,821.68 : x
  2. Step 2: Convert to fraction form
    68,117.68/94,009.98 = 39,821.68/x
  3. Step 3: Cross multiply
    68,117.68x = 94,009.98 × 39,821.68
  4. Step 4: Simplify right side
    68,117.68x = 3,743,635,340.37
  5. Step 5: Solve for x
    x = 3,743,635,340.37/68,117.68
  6. Step 6: Final answer
    x = 54,958.35

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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.