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Finding the Fourth Proportional to 65,146.85, 89,887.14 and 39,652.94

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Solution

The fourth proportional to 65,146.85, 89,887.14 and 39,652.94 is: 54,711.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,146.85 : 89,887.14 = 39,652.94 : x
  2. Step 2: Convert to fraction form
    65,146.85/89,887.14 = 39,652.94/x
  3. Step 3: Cross multiply
    65,146.85x = 89,887.14 × 39,652.94
  4. Step 4: Simplify right side
    65,146.85x = 3,564,288,919.76
  5. Step 5: Solve for x
    x = 3,564,288,919.76/65,146.85
  6. Step 6: Final answer
    x = 54,711.61

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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.