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Finding the Fourth Proportional to 50,939.70, 76,000.76 and 45,326.40

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Solution

The fourth proportional to 50,939.70, 76,000.76 and 45,326.40 is: 67,625.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,939.70 : 76,000.76 = 45,326.40 : x
  2. Step 2: Convert to fraction form
    50,939.70/76,000.76 = 45,326.40/x
  3. Step 3: Cross multiply
    50,939.70x = 76,000.76 × 45,326.40
  4. Step 4: Simplify right side
    50,939.70x = 3,444,840,621.43
  5. Step 5: Solve for x
    x = 3,444,840,621.43/50,939.70
  6. Step 6: Final answer
    x = 67,625.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.