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Finding the Fourth Proportional to 73,152.75, 100,950.80 and 39,618.75

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Solution

The fourth proportional to 73,152.75, 100,950.80 and 39,618.75 is: 54,673.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,152.75 : 100,950.80 = 39,618.75 : x
  2. Step 2: Convert to fraction form
    73,152.75/100,950.80 = 39,618.75/x
  3. Step 3: Cross multiply
    73,152.75x = 100,950.80 × 39,618.75
  4. Step 4: Simplify right side
    73,152.75x = 3,999,544,507.50
  5. Step 5: Solve for x
    x = 3,999,544,507.50/73,152.75
  6. Step 6: Final answer
    x = 54,673.88

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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.