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Finding the Fourth Proportional to 68,033.76, 93,887.76 and 39,740.64

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Solution

The fourth proportional to 68,033.76, 93,887.76 and 39,740.64 is: 54,842.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,033.76 : 93,887.76 = 39,740.64 : x
  2. Step 2: Convert to fraction form
    68,033.76/93,887.76 = 39,740.64/x
  3. Step 3: Cross multiply
    68,033.76x = 93,887.76 × 39,740.64
  4. Step 4: Simplify right side
    68,033.76x = 3,731,159,670.57
  5. Step 5: Solve for x
    x = 3,731,159,670.57/68,033.76
  6. Step 6: Final answer
    x = 54,842.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.