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Finding the Fourth Proportional to 49,570.88, 74,359.72 and 19,988.96

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Solution

The fourth proportional to 49,570.88, 74,359.72 and 19,988.96 is: 29,984.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,570.88 : 74,359.72 = 19,988.96 : x
  2. Step 2: Convert to fraction form
    49,570.88/74,359.72 = 19,988.96/x
  3. Step 3: Cross multiply
    49,570.88x = 74,359.72 × 19,988.96
  4. Step 4: Simplify right side
    49,570.88x = 1,486,373,468.69
  5. Step 5: Solve for x
    x = 1,486,373,468.69/49,570.88
  6. Step 6: Final answer
    x = 29,984.81

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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.