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Finding the Fourth Proportional to 68,245.79, 94,129.07 and 45,234

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Solution

The fourth proportional to 68,245.79, 94,129.07 and 45,234 is: 62,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,245.79 : 94,129.07 = 45,234 : x
  2. Step 2: Convert to fraction form
    68,245.79/94,129.07 = 45,234/x
  3. Step 3: Cross multiply
    68,245.79x = 94,129.07 × 45,234
  4. Step 4: Simplify right side
    68,245.79x = 4,257,834,126.21
  5. Step 5: Solve for x
    x = 4,257,834,126.21/68,245.79
  6. Step 6: Final answer
    x = 62,389.70

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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.