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Finding the Fourth Proportional to 44,411.60, 66,655.20 and 18,135.20

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Solution

The fourth proportional to 44,411.60, 66,655.20 and 18,135.20 is: 27,218.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,411.60 : 66,655.20 = 18,135.20 : x
  2. Step 2: Convert to fraction form
    44,411.60/66,655.20 = 18,135.20/x
  3. Step 3: Cross multiply
    44,411.60x = 66,655.20 × 18,135.20
  4. Step 4: Simplify right side
    44,411.60x = 1,208,805,383.04
  5. Step 5: Solve for x
    x = 1,208,805,383.04/44,411.60
  6. Step 6: Final answer
    x = 27,218.24

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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.