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Finding the Fourth Proportional to 71,925.75, 107,919.74 and 38,606.90

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Solution

The fourth proportional to 71,925.75, 107,919.74 and 38,606.90 is: 57,927.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,925.75 : 107,919.74 = 38,606.90 : x
  2. Step 2: Convert to fraction form
    71,925.75/107,919.74 = 38,606.90/x
  3. Step 3: Cross multiply
    71,925.75x = 107,919.74 × 38,606.90
  4. Step 4: Simplify right side
    71,925.75x = 4,166,446,513.69
  5. Step 5: Solve for x
    x = 4,166,446,513.69/71,925.75
  6. Step 6: Final answer
    x = 57,927.05

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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.