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Finding the Fourth Proportional to 66,104.37, 99,162.77 and 21,731.22

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Solution

The fourth proportional to 66,104.37, 99,162.77 and 21,731.22 is: 32,598.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,104.37 : 99,162.77 = 21,731.22 : x
  2. Step 2: Convert to fraction form
    66,104.37/99,162.77 = 21,731.22/x
  3. Step 3: Cross multiply
    66,104.37x = 99,162.77 × 21,731.22
  4. Step 4: Simplify right side
    66,104.37x = 2,154,927,862.02
  5. Step 5: Solve for x
    x = 2,154,927,862.02/66,104.37
  6. Step 6: Final answer
    x = 32,598.87

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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.