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Finding the Fourth Proportional to 71,927.25, 107,921.99 and 38,608.40

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Solution

The fourth proportional to 71,927.25, 107,921.99 and 38,608.40 is: 57,929.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,927.25 : 107,921.99 = 38,608.40 : x
  2. Step 2: Convert to fraction form
    71,927.25/107,921.99 = 38,608.40/x
  3. Step 3: Cross multiply
    71,927.25x = 107,921.99 × 38,608.40
  4. Step 4: Simplify right side
    71,927.25x = 4,166,695,358.72
  5. Step 5: Solve for x
    x = 4,166,695,358.72/71,927.25
  6. Step 6: Final answer
    x = 57,929.30

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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.