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Finding the Fourth Proportional to 57,740.40, 86,610.60 and 37,811.70

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Solution

The fourth proportional to 57,740.40, 86,610.60 and 37,811.70 is: 56,717.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,740.40 : 86,610.60 = 37,811.70 : x
  2. Step 2: Convert to fraction form
    57,740.40/86,610.60 = 37,811.70/x
  3. Step 3: Cross multiply
    57,740.40x = 86,610.60 × 37,811.70
  4. Step 4: Simplify right side
    57,740.40x = 3,274,894,024.02
  5. Step 5: Solve for x
    x = 3,274,894,024.02/57,740.40
  6. Step 6: Final answer
    x = 56,717.55

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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.