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Finding the Fourth Proportional to 65,852.55, 98,801 and 20,881.24

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Solution

The fourth proportional to 65,852.55, 98,801 and 20,881.24 is: 31,328.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,852.55 : 98,801 = 20,881.24 : x
  2. Step 2: Convert to fraction form
    65,852.55/98,801 = 20,881.24/x
  3. Step 3: Cross multiply
    65,852.55x = 98,801 × 20,881.24
  4. Step 4: Simplify right side
    65,852.55x = 2,063,087,393.24
  5. Step 5: Solve for x
    x = 2,063,087,393.24/65,852.55
  6. Step 6: Final answer
    x = 31,328.89

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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.