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Finding the Fourth Proportional to 66,960.69, 92,419.43 and 38,662.53

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Solution

The fourth proportional to 66,960.69, 92,419.43 and 38,662.53 is: 53,362.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,960.69 : 92,419.43 = 38,662.53 : x
  2. Step 2: Convert to fraction form
    66,960.69/92,419.43 = 38,662.53/x
  3. Step 3: Cross multiply
    66,960.69x = 92,419.43 × 38,662.53
  4. Step 4: Simplify right side
    66,960.69x = 3,573,168,791.65
  5. Step 5: Solve for x
    x = 3,573,168,791.65/66,960.69
  6. Step 6: Final answer
    x = 53,362.19

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1.5x scale

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.