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Finding the Fourth Proportional to 57,930.54, 86,902.92 and 20,482.86

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Solution

The fourth proportional to 57,930.54, 86,902.92 and 20,482.86 is: 30,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,930.54 : 86,902.92 = 20,482.86 : x
  2. Step 2: Convert to fraction form
    57,930.54/86,902.92 = 20,482.86/x
  3. Step 3: Cross multiply
    57,930.54x = 86,902.92 × 20,482.86
  4. Step 4: Simplify right side
    57,930.54x = 1,780,020,343.95
  5. Step 5: Solve for x
    x = 1,780,020,343.95/57,930.54
  6. Step 6: Final answer
    x = 30,726.80

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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.