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Finding the Fourth Proportional to 37,672.79, 51,987.96 and 21,756.87

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Solution

The fourth proportional to 37,672.79, 51,987.96 and 21,756.87 is: 30,024.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,672.79 : 51,987.96 = 21,756.87 : x
  2. Step 2: Convert to fraction form
    37,672.79/51,987.96 = 21,756.87/x
  3. Step 3: Cross multiply
    37,672.79x = 51,987.96 × 21,756.87
  4. Step 4: Simplify right side
    37,672.79x = 1,131,095,287.29
  5. Step 5: Solve for x
    x = 1,131,095,287.29/37,672.79
  6. Step 6: Final answer
    x = 30,024.20

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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.