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Finding the Fourth Proportional to 66,466.68, 91,721.78 and 39,595.27

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Solution

The fourth proportional to 66,466.68, 91,721.78 and 39,595.27 is: 54,640.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,466.68 : 91,721.78 = 39,595.27 : x
  2. Step 2: Convert to fraction form
    66,466.68/91,721.78 = 39,595.27/x
  3. Step 3: Cross multiply
    66,466.68x = 91,721.78 × 39,595.27
  4. Step 4: Simplify right side
    66,466.68x = 3,631,748,742.97
  5. Step 5: Solve for x
    x = 3,631,748,742.97/66,466.68
  6. Step 6: Final answer
    x = 54,640.14

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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.