Home / 76,272.85-114,397.03-20,855.89

Finding the Fourth Proportional to 76,272.85, 114,397.03 and 20,855.89

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Solution

The fourth proportional to 76,272.85, 114,397.03 and 20,855.89 is: 31,280.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,272.85 : 114,397.03 = 20,855.89 : x
  2. Step 2: Convert to fraction form
    76,272.85/114,397.03 = 20,855.89/x
  3. Step 3: Cross multiply
    76,272.85x = 114,397.03 × 20,855.89
  4. Step 4: Simplify right side
    76,272.85x = 2,385,851,874.01
  5. Step 5: Solve for x
    x = 2,385,851,874.01/76,272.85
  6. Step 6: Final answer
    x = 31,280.49

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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.