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Finding the Fourth Proportional to 44,419, 66,661.28 and 21,045.48

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Solution

The fourth proportional to 44,419, 66,661.28 and 21,045.48 is: 31,583.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,419 : 66,661.28 = 21,045.48 : x
  2. Step 2: Convert to fraction form
    44,419/66,661.28 = 21,045.48/x
  3. Step 3: Cross multiply
    44,419x = 66,661.28 × 21,045.48
  4. Step 4: Simplify right side
    44,419x = 1,402,918,635.01
  5. Step 5: Solve for x
    x = 1,402,918,635.01/44,419
  6. Step 6: Final answer
    x = 31,583.75

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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.