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Finding the Fourth Proportional to 65,267.60, 97,853.40 and 20,868.72

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Solution

The fourth proportional to 65,267.60, 97,853.40 and 20,868.72 is: 31,287.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,267.60 : 97,853.40 = 20,868.72 : x
  2. Step 2: Convert to fraction form
    65,267.60/97,853.40 = 20,868.72/x
  3. Step 3: Cross multiply
    65,267.60x = 97,853.40 × 20,868.72
  4. Step 4: Simplify right side
    65,267.60x = 2,042,075,205.65
  5. Step 5: Solve for x
    x = 2,042,075,205.65/65,267.60
  6. Step 6: Final answer
    x = 31,287.73

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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.