Home / 53,315.72-79,849.20-42,147.44

Finding the Fourth Proportional to 53,315.72, 79,849.20 and 42,147.44

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Solution

The fourth proportional to 53,315.72, 79,849.20 and 42,147.44 is: 63,122.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,315.72 : 79,849.20 = 42,147.44 : x
  2. Step 2: Convert to fraction form
    53,315.72/79,849.20 = 42,147.44/x
  3. Step 3: Cross multiply
    53,315.72x = 79,849.20 × 42,147.44
  4. Step 4: Simplify right side
    53,315.72x = 3,365,439,366.05
  5. Step 5: Solve for x
    x = 3,365,439,366.05/53,315.72
  6. Step 6: Final answer
    x = 63,122.83

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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.