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Finding the Fourth Proportional to 66,461.01, 99,696.92 and 19,713.75

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Solution

The fourth proportional to 66,461.01, 99,696.92 and 19,713.75 is: 29,572.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,461.01 : 99,696.92 = 19,713.75 : x
  2. Step 2: Convert to fraction form
    66,461.01/99,696.92 = 19,713.75/x
  3. Step 3: Cross multiply
    66,461.01x = 99,696.92 × 19,713.75
  4. Step 4: Simplify right side
    66,461.01x = 1,965,400,156.65
  5. Step 5: Solve for x
    x = 1,965,400,156.65/66,461.01
  6. Step 6: Final answer
    x = 29,572.23

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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.