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Finding the Fourth Proportional to 6,642,527.21, 9,966,940.09 and 3,952,167.29

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Solution

The fourth proportional to 6,642,527.21, 9,966,940.09 and 3,952,167.29 is: 5,930,124.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,527.21 : 9,966,940.09 = 3,952,167.29 : x
  2. Step 2: Convert to fraction form
    6,642,527.21/9,966,940.09 = 3,952,167.29/x
  3. Step 3: Cross multiply
    6,642,527.21x = 9,966,940.09 × 3,952,167.29
  4. Step 4: Simplify right side
    6,642,527.21x = 39,391,014,604,979.51
  5. Step 5: Solve for x
    x = 39,391,014,604,979.51/6,642,527.21
  6. Step 6: Final answer
    x = 5,930,124.69

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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.