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Finding the Fourth Proportional to 65,846.48, 98,791.89 and 20,875.18

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Solution

The fourth proportional to 65,846.48, 98,791.89 and 20,875.18 is: 31,319.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,846.48 : 98,791.89 = 20,875.18 : x
  2. Step 2: Convert to fraction form
    65,846.48/98,791.89 = 20,875.18/x
  3. Step 3: Cross multiply
    65,846.48x = 98,791.89 × 20,875.18
  4. Step 4: Simplify right side
    65,846.48x = 2,062,298,486.29
  5. Step 5: Solve for x
    x = 2,062,298,486.29/65,846.48
  6. Step 6: Final answer
    x = 31,319.80

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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.