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Finding the Fourth Proportional to 65,871.99, 98,823.73 and 21,498.82

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Solution

The fourth proportional to 65,871.99, 98,823.73 and 21,498.82 is: 32,253.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,871.99 : 98,823.73 = 21,498.82 : x
  2. Step 2: Convert to fraction form
    65,871.99/98,823.73 = 21,498.82/x
  3. Step 3: Cross multiply
    65,871.99x = 98,823.73 × 21,498.82
  4. Step 4: Simplify right side
    65,871.99x = 2,124,593,878.39
  5. Step 5: Solve for x
    x = 2,124,593,878.39/65,871.99
  6. Step 6: Final answer
    x = 32,253.37

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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.