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Finding the Fourth Proportional to 66,042.40, 99,063.60 and 24,480.80

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Solution

The fourth proportional to 66,042.40, 99,063.60 and 24,480.80 is: 36,721.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,042.40 : 99,063.60 = 24,480.80 : x
  2. Step 2: Convert to fraction form
    66,042.40/99,063.60 = 24,480.80/x
  3. Step 3: Cross multiply
    66,042.40x = 99,063.60 × 24,480.80
  4. Step 4: Simplify right side
    66,042.40x = 2,425,156,178.88
  5. Step 5: Solve for x
    x = 2,425,156,178.88/66,042.40
  6. Step 6: Final answer
    x = 36,721.20

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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.