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Finding the Fourth Proportional to 65,855.01, 98,804.69 and 20,883.75

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Solution

The fourth proportional to 65,855.01, 98,804.69 and 20,883.75 is: 31,332.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,855.01 : 98,804.69 = 20,883.75 : x
  2. Step 2: Convert to fraction form
    65,855.01/98,804.69 = 20,883.75/x
  3. Step 3: Cross multiply
    65,855.01x = 98,804.69 × 20,883.75
  4. Step 4: Simplify right side
    65,855.01x = 2,063,412,444.79
  5. Step 5: Solve for x
    x = 2,063,412,444.79/65,855.01
  6. Step 6: Final answer
    x = 31,332.66

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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.