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Finding the Fourth Proportional to 53,195.70, 79,793.55 and 21,605.70

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Solution

The fourth proportional to 53,195.70, 79,793.55 and 21,605.70 is: 32,408.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,195.70 : 79,793.55 = 21,605.70 : x
  2. Step 2: Convert to fraction form
    53,195.70/79,793.55 = 21,605.70/x
  3. Step 3: Cross multiply
    53,195.70x = 79,793.55 × 21,605.70
  4. Step 4: Simplify right side
    53,195.70x = 1,723,995,503.24
  5. Step 5: Solve for x
    x = 1,723,995,503.24/53,195.70
  6. Step 6: Final answer
    x = 32,408.55

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1.5x scale

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.