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Finding the Fourth Proportional to 44,391.20, 66,577.20 and 19,431.20

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Solution

The fourth proportional to 44,391.20, 66,577.20 and 19,431.20 is: 29,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,391.20 : 66,577.20 = 19,431.20 : x
  2. Step 2: Convert to fraction form
    44,391.20/66,577.20 = 19,431.20/x
  3. Step 3: Cross multiply
    44,391.20x = 66,577.20 × 19,431.20
  4. Step 4: Simplify right side
    44,391.20x = 1,293,674,888.64
  5. Step 5: Solve for x
    x = 1,293,674,888.64/44,391.20
  6. Step 6: Final answer
    x = 29,142.60

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1.5x scale

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.