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Finding the Fourth Proportional to 65,112.60, 97,674.30 and 20,738.10

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Solution

The fourth proportional to 65,112.60, 97,674.30 and 20,738.10 is: 31,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,112.60 : 97,674.30 = 20,738.10 : x
  2. Step 2: Convert to fraction form
    65,112.60/97,674.30 = 20,738.10/x
  3. Step 3: Cross multiply
    65,112.60x = 97,674.30 × 20,738.10
  4. Step 4: Simplify right side
    65,112.60x = 2,025,579,400.83
  5. Step 5: Solve for x
    x = 2,025,579,400.83/65,112.60
  6. Step 6: Final answer
    x = 31,108.87

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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.