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Finding the Fourth Proportional to 66,598.68, 91,906.38 and 38,302.50

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Solution

The fourth proportional to 66,598.68, 91,906.38 and 38,302.50 is: 52,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,598.68 : 91,906.38 = 38,302.50 : x
  2. Step 2: Convert to fraction form
    66,598.68/91,906.38 = 38,302.50/x
  3. Step 3: Cross multiply
    66,598.68x = 91,906.38 × 38,302.50
  4. Step 4: Simplify right side
    66,598.68x = 3,520,244,119.95
  5. Step 5: Solve for x
    x = 3,520,244,119.95/66,598.68
  6. Step 6: Final answer
    x = 52,857.57

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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.