Home / 72,881.42-109,337.24-30,761.84

Finding the Fourth Proportional to 72,881.42, 109,337.24 and 30,761.84

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Solution

The fourth proportional to 72,881.42, 109,337.24 and 30,761.84 is: 46,149.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,881.42 : 109,337.24 = 30,761.84 : x
  2. Step 2: Convert to fraction form
    72,881.42/109,337.24 = 30,761.84/x
  3. Step 3: Cross multiply
    72,881.42x = 109,337.24 × 30,761.84
  4. Step 4: Simplify right side
    72,881.42x = 3,363,415,033.17
  5. Step 5: Solve for x
    x = 3,363,415,033.17/72,881.42
  6. Step 6: Final answer
    x = 46,149.15

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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.