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Finding the Fourth Proportional to 65,607.87, 98,427.41 and 21,234.62

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Solution

The fourth proportional to 65,607.87, 98,427.41 and 21,234.62 is: 31,856.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,607.87 : 98,427.41 = 21,234.62 : x
  2. Step 2: Convert to fraction form
    65,607.87/98,427.41 = 21,234.62/x
  3. Step 3: Cross multiply
    65,607.87x = 98,427.41 × 21,234.62
  4. Step 4: Simplify right side
    65,607.87x = 2,090,068,648.93
  5. Step 5: Solve for x
    x = 2,090,068,648.93/65,607.87
  6. Step 6: Final answer
    x = 31,856.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.