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Finding the Fourth Proportional to 76,589.70, 114,884.55 and 68,133.30

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Solution

The fourth proportional to 76,589.70, 114,884.55 and 68,133.30 is: 102,199.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,589.70 : 114,884.55 = 68,133.30 : x
  2. Step 2: Convert to fraction form
    76,589.70/114,884.55 = 68,133.30/x
  3. Step 3: Cross multiply
    76,589.70x = 114,884.55 × 68,133.30
  4. Step 4: Simplify right side
    76,589.70x = 7,827,463,510.52
  5. Step 5: Solve for x
    x = 7,827,463,510.52/76,589.70
  6. Step 6: Final answer
    x = 102,199.95

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1.5x scale

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.