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Finding the Fourth Proportional to 37,043.50, 51,119.51 and 21,128.21

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Solution

The fourth proportional to 37,043.50, 51,119.51 and 21,128.21 is: 29,156.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,043.50 : 51,119.51 = 21,128.21 : x
  2. Step 2: Convert to fraction form
    37,043.50/51,119.51 = 21,128.21/x
  3. Step 3: Cross multiply
    37,043.50x = 51,119.51 × 21,128.21
  4. Step 4: Simplify right side
    37,043.50x = 1,080,063,764.53
  5. Step 5: Solve for x
    x = 1,080,063,764.53/37,043.50
  6. Step 6: Final answer
    x = 29,156.64

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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.