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Finding the Fourth Proportional to 65,866.68, 98,800.92 and 21,493.08

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Solution

The fourth proportional to 65,866.68, 98,800.92 and 21,493.08 is: 32,239.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,866.68 : 98,800.92 = 21,493.08 : x
  2. Step 2: Convert to fraction form
    65,866.68/98,800.92 = 21,493.08/x
  3. Step 3: Cross multiply
    65,866.68x = 98,800.92 × 21,493.08
  4. Step 4: Simplify right side
    65,866.68x = 2,123,536,077.63
  5. Step 5: Solve for x
    x = 2,123,536,077.63/65,866.68
  6. Step 6: Final answer
    x = 32,239.91

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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.