Home / 87,784.79-131,330.72-67,641.68

Finding the Fourth Proportional to 87,784.79, 131,330.72 and 67,641.68

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Solution

The fourth proportional to 87,784.79, 131,330.72 and 67,641.68 is: 101,195.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,784.79 : 131,330.72 = 67,641.68 : x
  2. Step 2: Convert to fraction form
    87,784.79/131,330.72 = 67,641.68/x
  3. Step 3: Cross multiply
    87,784.79x = 131,330.72 × 67,641.68
  4. Step 4: Simplify right side
    87,784.79x = 8,883,431,033.84
  5. Step 5: Solve for x
    x = 8,883,431,033.84/87,784.79
  6. Step 6: Final answer
    x = 101,195.57

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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.