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Finding the Fourth Proportional to 62,142.56, 85,813.44 and 39,825.44

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Solution

The fourth proportional to 62,142.56, 85,813.44 and 39,825.44 is: 54,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,142.56 : 85,813.44 = 39,825.44 : x
  2. Step 2: Convert to fraction form
    62,142.56/85,813.44 = 39,825.44/x
  3. Step 3: Cross multiply
    62,142.56x = 85,813.44 × 39,825.44
  4. Step 4: Simplify right side
    62,142.56x = 3,417,558,005.91
  5. Step 5: Solve for x
    x = 3,417,558,005.91/62,142.56
  6. Step 6: Final answer
    x = 54,995.45

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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.