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Finding the Fourth Proportional to 65,959.92, 98,953.74 and 21,583.22

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Solution

The fourth proportional to 65,959.92, 98,953.74 and 21,583.22 is: 32,379.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,959.92 : 98,953.74 = 21,583.22 : x
  2. Step 2: Convert to fraction form
    65,959.92/98,953.74 = 21,583.22/x
  3. Step 3: Cross multiply
    65,959.92x = 98,953.74 × 21,583.22
  4. Step 4: Simplify right side
    65,959.92x = 2,135,739,845.47
  5. Step 5: Solve for x
    x = 2,135,739,845.47/65,959.92
  6. Step 6: Final answer
    x = 32,379.36

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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.