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Finding the Fourth Proportional to 65,125.37, 89,887.03 and 39,639.94

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Solution

The fourth proportional to 65,125.37, 89,887.03 and 39,639.94 is: 54,711.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,125.37 : 89,887.03 = 39,639.94 : x
  2. Step 2: Convert to fraction form
    65,125.37/89,887.03 = 39,639.94/x
  3. Step 3: Cross multiply
    65,125.37x = 89,887.03 × 39,639.94
  4. Step 4: Simplify right side
    65,125.37x = 3,563,116,152.16
  5. Step 5: Solve for x
    x = 3,563,116,152.16/65,125.37
  6. Step 6: Final answer
    x = 54,711.64

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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.