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Finding the Fourth Proportional to 44,260, 66,390.12 and 11,428

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Solution

The fourth proportional to 44,260, 66,390.12 and 11,428 is: 17,142.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,260 : 66,390.12 = 11,428 : x
  2. Step 2: Convert to fraction form
    44,260/66,390.12 = 11,428/x
  3. Step 3: Cross multiply
    44,260x = 66,390.12 × 11,428
  4. Step 4: Simplify right side
    44,260x = 758,706,291.36
  5. Step 5: Solve for x
    x = 758,706,291.36/44,260
  6. Step 6: Final answer
    x = 17,142.03

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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.