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Finding the Fourth Proportional to 65,893.76, 98,843.84 and 21,520.48

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Solution

The fourth proportional to 65,893.76, 98,843.84 and 21,520.48 is: 32,281.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,893.76 : 98,843.84 = 21,520.48 : x
  2. Step 2: Convert to fraction form
    65,893.76/98,843.84 = 21,520.48/x
  3. Step 3: Cross multiply
    65,893.76x = 98,843.84 × 21,520.48
  4. Step 4: Simplify right side
    65,893.76x = 2,127,166,881.84
  5. Step 5: Solve for x
    x = 2,127,166,881.84/65,893.76
  6. Step 6: Final answer
    x = 32,281.77

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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.