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Finding the Fourth Proportional to 66,955.46, 100,280.10 and 43,510.82

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Solution

The fourth proportional to 66,955.46, 100,280.10 and 43,510.82 is: 65,166.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,955.46 : 100,280.10 = 43,510.82 : x
  2. Step 2: Convert to fraction form
    66,955.46/100,280.10 = 43,510.82/x
  3. Step 3: Cross multiply
    66,955.46x = 100,280.10 × 43,510.82
  4. Step 4: Simplify right side
    66,955.46x = 4,363,269,484.15
  5. Step 5: Solve for x
    x = 4,363,269,484.15/66,955.46
  6. Step 6: Final answer
    x = 65,166.75

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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.