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Finding the Fourth Proportional to 68,754.40, 94,887.80 and 38,539.78

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Solution

The fourth proportional to 68,754.40, 94,887.80 and 38,539.78 is: 53,188.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,754.40 : 94,887.80 = 38,539.78 : x
  2. Step 2: Convert to fraction form
    68,754.40/94,887.80 = 38,539.78/x
  3. Step 3: Cross multiply
    68,754.40x = 94,887.80 × 38,539.78
  4. Step 4: Simplify right side
    68,754.40x = 3,656,954,743.99
  5. Step 5: Solve for x
    x = 3,656,954,743.99/68,754.40
  6. Step 6: Final answer
    x = 53,188.66

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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.