Home / 71,729.15-107,429.70-36,627.80

Finding the Fourth Proportional to 71,729.15, 107,429.70 and 36,627.80

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Solution

The fourth proportional to 71,729.15, 107,429.70 and 36,627.80 is: 54,857.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,729.15 : 107,429.70 = 36,627.80 : x
  2. Step 2: Convert to fraction form
    71,729.15/107,429.70 = 36,627.80/x
  3. Step 3: Cross multiply
    71,729.15x = 107,429.70 × 36,627.80
  4. Step 4: Simplify right side
    71,729.15x = 3,934,913,565.66
  5. Step 5: Solve for x
    x = 3,934,913,565.66/71,729.15
  6. Step 6: Final answer
    x = 54,857.94

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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.