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Finding the Fourth Proportional to 66,895.17, 100,359.42 and 47,212.17

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Solution

The fourth proportional to 66,895.17, 100,359.42 and 47,212.17 is: 70,830.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,895.17 : 100,359.42 = 47,212.17 : x
  2. Step 2: Convert to fraction form
    66,895.17/100,359.42 = 47,212.17/x
  3. Step 3: Cross multiply
    66,895.17x = 100,359.42 × 47,212.17
  4. Step 4: Simplify right side
    66,895.17x = 4,738,185,998.14
  5. Step 5: Solve for x
    x = 4,738,185,998.14/66,895.17
  6. Step 6: Final answer
    x = 70,830.02

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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.