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Finding the Fourth Proportional to 44,124.75, 66,187.13 and 12,960

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Solution

The fourth proportional to 44,124.75, 66,187.13 and 12,960 is: 19,440

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,124.75 : 66,187.13 = 12,960 : x
  2. Step 2: Convert to fraction form
    44,124.75/66,187.13 = 12,960/x
  3. Step 3: Cross multiply
    44,124.75x = 66,187.13 × 12,960
  4. Step 4: Simplify right side
    44,124.75x = 857,785,140
  5. Step 5: Solve for x
    x = 857,785,140/44,124.75
  6. Step 6: Final answer
    x = 19,440

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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.