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Finding the Fourth Proportional to 37,912.50, 52,319.25 and 21,145.50

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Solution

The fourth proportional to 37,912.50, 52,319.25 and 21,145.50 is: 29,180.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,912.50 : 52,319.25 = 21,145.50 : x
  2. Step 2: Convert to fraction form
    37,912.50/52,319.25 = 21,145.50/x
  3. Step 3: Cross multiply
    37,912.50x = 52,319.25 × 21,145.50
  4. Step 4: Simplify right side
    37,912.50x = 1,106,316,700.88
  5. Step 5: Solve for x
    x = 1,106,316,700.88/37,912.50
  6. Step 6: Final answer
    x = 29,180.79

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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.