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Finding the Fourth Proportional to 65,111.60, 97,672.80 and 20,737.10

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Solution

The fourth proportional to 65,111.60, 97,672.80 and 20,737.10 is: 31,107.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,111.60 : 97,672.80 = 20,737.10 : x
  2. Step 2: Convert to fraction form
    65,111.60/97,672.80 = 20,737.10/x
  3. Step 3: Cross multiply
    65,111.60x = 97,672.80 × 20,737.10
  4. Step 4: Simplify right side
    65,111.60x = 2,025,450,620.88
  5. Step 5: Solve for x
    x = 2,025,450,620.88/65,111.60
  6. Step 6: Final answer
    x = 31,107.37

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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.