Home / 37,740.73-56,621.30-12,780.78

Finding the Fourth Proportional to 37,740.73, 56,621.30 and 12,780.78

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Solution

The fourth proportional to 37,740.73, 56,621.30 and 12,780.78 is: 19,174.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,740.73 : 56,621.30 = 12,780.78 : x
  2. Step 2: Convert to fraction form
    37,740.73/56,621.30 = 12,780.78/x
  3. Step 3: Cross multiply
    37,740.73x = 56,621.30 × 12,780.78
  4. Step 4: Simplify right side
    37,740.73x = 723,664,378.61
  5. Step 5: Solve for x
    x = 723,664,378.61/37,740.73
  6. Step 6: Final answer
    x = 19,174.63

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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.