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Finding the Fourth Proportional to 40,995, 61,491.42 and 11,411.64

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Solution

The fourth proportional to 40,995, 61,491.42 and 11,411.64 is: 17,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,995 : 61,491.42 = 11,411.64 : x
  2. Step 2: Convert to fraction form
    40,995/61,491.42 = 11,411.64/x
  3. Step 3: Cross multiply
    40,995x = 61,491.42 × 11,411.64
  4. Step 4: Simplify right side
    40,995x = 701,717,948.13
  5. Step 5: Solve for x
    x = 701,717,948.13/40,995
  6. Step 6: Final answer
    x = 17,117.16

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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.