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Finding the Fourth Proportional to 66,936.78, 92,362.48 and 38,637

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Solution

The fourth proportional to 66,936.78, 92,362.48 and 38,637 is: 53,313.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,936.78 : 92,362.48 = 38,637 : x
  2. Step 2: Convert to fraction form
    66,936.78/92,362.48 = 38,637/x
  3. Step 3: Cross multiply
    66,936.78x = 92,362.48 × 38,637
  4. Step 4: Simplify right side
    66,936.78x = 3,568,609,043.17
  5. Step 5: Solve for x
    x = 3,568,609,043.17/66,936.78
  6. Step 6: Final answer
    x = 53,313.13

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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.