Home / 65,117.20-97,740.60-31,874.80

Finding the Fourth Proportional to 65,117.20, 97,740.60 and 31,874.80

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Solution

The fourth proportional to 65,117.20, 97,740.60 and 31,874.80 is: 47,843.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,117.20 : 97,740.60 = 31,874.80 : x
  2. Step 2: Convert to fraction form
    65,117.20/97,740.60 = 31,874.80/x
  3. Step 3: Cross multiply
    65,117.20x = 97,740.60 × 31,874.80
  4. Step 4: Simplify right side
    65,117.20x = 3,115,462,076.88
  5. Step 5: Solve for x
    x = 3,115,462,076.88/65,117.20
  6. Step 6: Final answer
    x = 47,843.92

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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.