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Finding the Fourth Proportional to 76,225.72, 105,213.72 and 49,367.20

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Solution

The fourth proportional to 76,225.72, 105,213.72 and 49,367.20 is: 68,141.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,225.72 : 105,213.72 = 49,367.20 : x
  2. Step 2: Convert to fraction form
    76,225.72/105,213.72 = 49,367.20/x
  3. Step 3: Cross multiply
    76,225.72x = 105,213.72 × 49,367.20
  4. Step 4: Simplify right side
    76,225.72x = 5,194,106,757.98
  5. Step 5: Solve for x
    x = 5,194,106,757.98/76,225.72
  6. Step 6: Final answer
    x = 68,141.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.