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Finding the Fourth Proportional to 66,935.40, 100,412.50 and 19,553.97

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Solution

The fourth proportional to 66,935.40, 100,412.50 and 19,553.97 is: 29,333.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,935.40 : 100,412.50 = 19,553.97 : x
  2. Step 2: Convert to fraction form
    66,935.40/100,412.50 = 19,553.97/x
  3. Step 3: Cross multiply
    66,935.40x = 100,412.50 × 19,553.97
  4. Step 4: Simplify right side
    66,935.40x = 1,963,463,012.63
  5. Step 5: Solve for x
    x = 1,963,463,012.63/66,935.40
  6. Step 6: Final answer
    x = 29,333.70

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1.5x scale

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.