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Finding the Fourth Proportional to 64,686.82, 89,246.46 and 52,729.60

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Solution

The fourth proportional to 64,686.82, 89,246.46 and 52,729.60 is: 72,749.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,686.82 : 89,246.46 = 52,729.60 : x
  2. Step 2: Convert to fraction form
    64,686.82/89,246.46 = 52,729.60/x
  3. Step 3: Cross multiply
    64,686.82x = 89,246.46 × 52,729.60
  4. Step 4: Simplify right side
    64,686.82x = 4,705,930,137.22
  5. Step 5: Solve for x
    x = 4,705,930,137.22/64,686.82
  6. Step 6: Final answer
    x = 72,749.44

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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.