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Finding the Fourth Proportional to 68,830.56, 94,980.57 and 38,611.68

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Solution

The fourth proportional to 68,830.56, 94,980.57 and 38,611.68 is: 53,280.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,830.56 : 94,980.57 = 38,611.68 : x
  2. Step 2: Convert to fraction form
    68,830.56/94,980.57 = 38,611.68/x
  3. Step 3: Cross multiply
    68,830.56x = 94,980.57 × 38,611.68
  4. Step 4: Simplify right side
    68,830.56x = 3,667,359,375.06
  5. Step 5: Solve for x
    x = 3,667,359,375.06/68,830.56
  6. Step 6: Final answer
    x = 53,280.98

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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.