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Finding the Fourth Proportional to 43,915.92, 65,875.71 and 12,751.17

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Solution

The fourth proportional to 43,915.92, 65,875.71 and 12,751.17 is: 19,127.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,915.92 : 65,875.71 = 12,751.17 : x
  2. Step 2: Convert to fraction form
    43,915.92/65,875.71 = 12,751.17/x
  3. Step 3: Cross multiply
    43,915.92x = 65,875.71 × 12,751.17
  4. Step 4: Simplify right side
    43,915.92x = 839,992,440.83
  5. Step 5: Solve for x
    x = 839,992,440.83/43,915.92
  6. Step 6: Final answer
    x = 19,127.29

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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.