Home / 81,935.42-122,903.52-28,627.17

Finding the Fourth Proportional to 81,935.42, 122,903.52 and 28,627.17

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Solution

The fourth proportional to 81,935.42, 122,903.52 and 28,627.17 is: 42,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,935.42 : 122,903.52 = 28,627.17 : x
  2. Step 2: Convert to fraction form
    81,935.42/122,903.52 = 28,627.17/x
  3. Step 3: Cross multiply
    81,935.42x = 122,903.52 × 28,627.17
  4. Step 4: Simplify right side
    81,935.42x = 3,518,379,960.64
  5. Step 5: Solve for x
    x = 3,518,379,960.64/81,935.42
  6. Step 6: Final answer
    x = 42,940.89

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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.