Home / 74,188.50-102,380.14-40,653.78

Finding the Fourth Proportional to 74,188.50, 102,380.14 and 40,653.78

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Solution

The fourth proportional to 74,188.50, 102,380.14 and 40,653.78 is: 56,102.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,188.50 : 102,380.14 = 40,653.78 : x
  2. Step 2: Convert to fraction form
    74,188.50/102,380.14 = 40,653.78/x
  3. Step 3: Cross multiply
    74,188.50x = 102,380.14 × 40,653.78
  4. Step 4: Simplify right side
    74,188.50x = 4,162,139,687.93
  5. Step 5: Solve for x
    x = 4,162,139,687.93/74,188.50
  6. Step 6: Final answer
    x = 56,102.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.