Home / 71,965.47-107,922.28-30,415.71

Finding the Fourth Proportional to 71,965.47, 107,922.28 and 30,415.71

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Solution

The fourth proportional to 71,965.47, 107,922.28 and 30,415.71 is: 45,612.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,965.47 : 107,922.28 = 30,415.71 : x
  2. Step 2: Convert to fraction form
    71,965.47/107,922.28 = 30,415.71/x
  3. Step 3: Cross multiply
    71,965.47x = 107,922.28 × 30,415.71
  4. Step 4: Simplify right side
    71,965.47x = 3,282,532,771.02
  5. Step 5: Solve for x
    x = 3,282,532,771.02/71,965.47
  6. Step 6: Final answer
    x = 45,612.61

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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.