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Finding the Fourth Proportional to 52,770.38, 79,154.76 and 21,188.48

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Solution

The fourth proportional to 52,770.38, 79,154.76 and 21,188.48 is: 31,782.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,770.38 : 79,154.76 = 21,188.48 : x
  2. Step 2: Convert to fraction form
    52,770.38/79,154.76 = 21,188.48/x
  3. Step 3: Cross multiply
    52,770.38x = 79,154.76 × 21,188.48
  4. Step 4: Simplify right side
    52,770.38x = 1,677,169,049.16
  5. Step 5: Solve for x
    x = 1,677,169,049.16/52,770.38
  6. Step 6: Final answer
    x = 31,782.39

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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.