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Finding the Fourth Proportional to 44,520, 66,786.57 and 12,930.30

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Solution

The fourth proportional to 44,520, 66,786.57 and 12,930.30 is: 19,397.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,520 : 66,786.57 = 12,930.30 : x
  2. Step 2: Convert to fraction form
    44,520/66,786.57 = 12,930.30/x
  3. Step 3: Cross multiply
    44,520x = 66,786.57 × 12,930.30
  4. Step 4: Simplify right side
    44,520x = 863,570,386.07
  5. Step 5: Solve for x
    x = 863,570,386.07/44,520
  6. Step 6: Final answer
    x = 19,397.36

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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.